I ran across this bit of text and don’t remember its origins. I *think* I wrote it as a summary after watching one of Carol Dweck’s TED talks on learning and the growth mindset, but I can’t be sure (apologies if I missed the author). Still seems like good advice.
A motivation problem is solved by thinking (convincing yourself that something is important). A follow-through problem is solved by not thinking (don’t deliberate, just act).
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J.R. Johnson 
I think the second part is pretty important, but it’s pretty hard not to think sometimes. You bring up a good point with this summary. Sometimes I feel that I get in my own way with my overthinking. Thanks for sharing!