Author and self-help guru, James Clear, has this to say about building good habits (and the frustrations that can come in the process):

Imagine that you have an ice cube sitting on the table in front of you. The room is cold and you can see your breath. It is currently twenty-five degrees. Ever so slowly, the room begins to heat up. Twenty-six degrees. Twenty-seven. Twenty-eight. The ice cube is still sitting on the table in front of you. Twenty-nine degrees. Thirty. Thirty-one. Still, nothing has happened. Then, thirty-two degrees. The ice begins to melt. A one-degree shift, seemingly no different from the temperature increases before it, has unlocked a huge change. Breakthrough moments are often the result of many previous actions, which build up the potential required to unleash a major change. This pattern shows up everywhere. Cancer spends 80 percent of its life undetectable, then takes over the body in months. Bamboo can barely be seen for the first five years as it builds extensive root systems underground before exploding ninety feet into the air within six weeks. Similarly, habits often appear to make no difference until you cross a critical threshold and unlock a new level of performance.

The time between our first efforts to developed a new, healthy habit or spiritual discipline, and the time when we feel we've finally attained a measure of success, can seem interminable. It is in this time of "try and try again" that many of us simply give up. This is what Clear calls The Valley of Dissappointment. 

You expect to make progress in a linear fashion and it’s frustrating how ineffective changes can seem during the first days, weeks, and even months. It doesn’t feel like you are going anywhere. It’s a hallmark of any compounding process: the most powerful outcomes are delayed. This is one of the core reasons why it is so hard to build habits that last. People make a few small changes, fail to see a tangible result, and decide to stop. You think, “I’ve been running every day for a month, so why can’t I see any change in my body?” Once this kind of thinking takes over, it’s easy to let good habits fall by the wayside. But in order to make a meaningful difference, habits need to persist long enough to break through this plateau—what I call the Plateau of Latent Potential.

The Plateau of Latent Potential ... what a concept! Instead of a mountaintop, you only see a dead, dry plateau. But this is the time to resolve to stay in the struggle! Why?

Complaining about not achieving success despite working hard is like complaining about an ice cube not melting when you heated it from twenty-five to thirty-one degrees. Your work was not wasted; it is just being stored. All the action happens at thirty-two degrees. When you finally break through the Plateau of Latent Potential, people will call it an overnight success. The outside world only sees the most dramatic event rather than all that preceded it. But you know that it’s the work you did long ago —when it seemed that you weren’t making any progress—that makes the jump today possible.

In the early 16th century, Michelangelo, one of the greatest artists of all time, was presented with a massive block of marble that other sculptors had deemed worthless. This marble, originally quarried in Carrara, was considered of poor quality due to its thinness and imperfections, like holes and veins. It was deemed too flawed, too difficult to work with, and thus was abandoned by two previous sculptors who attempted to use it. 

Yet, Michelangelo saw something different in it. He saw the potential for greatness. 

Despite these challenges, Michelangelo transformed the flawed marble into one of the most celebrated masterpieces in history. His ability to work with the material's limitations and create such a stunning sculpture is a testament to his genius and skill. 

It all stemmed from his general artistic philosophy when approaching a new block of marble:

"The sculpture is already complete within the marble block, before I start my work. It is already there, I just have to chisel away the superfluous material."

It is variously (and perhaps anectodaly) reported that when asked about this particular magnificent statue, Michelangelo famously said, “I saw David in the marble and removed everything that was not David.”

A friend of mine once gave me a thousand-piece puzzle. It was a beautiful picture on the box, an ocean sunset with waves crashing against the rocks. Excited, I poured the pieces onto the table and started working. 

At first, it was fun. Fitting the edges and finding the bright colors of the sky. But as the hours passed, frustration crept in. Some pieces didn’t seem to fit anywhere. Others looked like they belonged but were just a little off. After a while, I was tempted to give up. It felt like a mess, and I couldn’t see how it would ever come together.

Days later, I returned to the puzzle, unwilling to just walk away without seeing the beauty of the end product.

Slowly, piece by piece, it started to take shape. What once felt like random, useless pieces were actually critical parts of the most beautiful sections.