Is this always the case?

It seems like a familiar story every time. Yet I did not notice it until yesterday night. It's like back in school. In order to write a good essay you should follow this steps: blah blah blah, whatever they are. And then for the rest of your school all you do is follow those simple steps.

Here's what I mean. Seems like everything I do is happening according to preset plan.

1. Oh cool! Good idea.
2. It's easy. I can do that
3. Read something. Watch some YouTube. Educate myself a bit.
4. That's not hard at all.
5. Tell my wife it'll take me 15 min.
6. Hack at it for 3 hours
7. Have "The hell with it" thought cross my mind.
8. Promise myself a cold one once it's done.
9. Hack at it for another 3 hours
10. Have it complete
11. Stand back and ask "what was that easy part?"
12. Skip on the beer. I told my wife I'd be back 5 something hours ago. Out of time now.
13. Sleep on it.
14. It was not so bad after all.

Maybe I am just a slow learner. It appears I go through the same 14 steps every time I do anything and come back to doing it again. If needed of course. For the exception of car stuff,  that's pure masochism. I can't come up with any rational explanation on that.

My enlightening moment came after attempt to remove windshield and convertible top off of the donor.

 Ah, it's like throwing octopus on hockey ice. It's just makes me smile to see it flat on the driveway.