How often do you feel like shit or get a stuck while you trying to run the project ?

In startups? It'll happen a lot, probably 1-2 times a week. It's a rollercoaster.

Like every time whenever they stuck at one repeated error. I hate to solve errors sometimes and I feel that either I don't belong to this or I don't have skills as others do. But in the end, I take a nap and then eat and then try again: magically it gets solved sometimes.