It takes a tremendous amount the first 3-7 times. After that it is a learned skill.
The only thing that helped my depression, apathy and executive dysfunction was realizing I was going to rot anyways, I was never going to be happy, so I may as well start the startup, go on runs, and succeed.
Let go of the expectation you will want to/be in the mood or feel good from it
Life is not chocolate malts and gummy bears