A friend once shared how surfing illustrates how having a process driven approach vs. a result driven approach is beneficial.
In surfing you start off knowing the basics of how to get on the water, standing up on the board, and riding the wave. You may know the basics, but until you actually go out in the water, you're not going to know about what will happen. The waves may not be the right size to your liking. You could be having an off day and keep falling. Or you may be having a great day on the water. All of this are factors to you actually enjoying surfing.
Instead of focusing on trying to catch a good wave or catching many waves, you can focus on the process that is surfing. This way you can make incremental improvements to how you surf. You'll then see each wave as a new opportunity to gather more experience/data for the next time you try. And you can replace "surfing" with entrepreneurship, science, and many other areas.
With this mindset, you'll be able to let whatever happens to happen. Life is too short to always be chasing after the end goal. From my experience, after you attain the goal, you'll always have another goal in mind. You will never be truly satisfied.