High natural Dopamine level makes evaluation and action effortless. Aerobic exercise increases natural Dopamine levels.
I'm a science nerd, and skim research headlines for articles of interest. A few months ago I read a neuroscience one that's helped my motivation, so I thought I'd share.
Apparently, scientists no longer think that Dopamine is used as a reward for accomplishing something. Instead, the brain uses Dopamine for evaluating whether an action is worth doing. People with high levels of dopamine quickly evaluate the pros and cons of doing an activity with little effort. They are active people and easily get things done. People with low dopamine levels become so exhausted trying to evaluate whether something is worth doing, that they usually just don't do the thing- they're wiped out just by evaluating! Fortunately, you can naturally increase Dopamine levels in your brain with aerobic exercise 3x a week.
This was all a big revelation to me, so I've been trying to get that aerobic exercise in as a starting point. It seems to be working, helping me make more effortless decisions, and therefore accomplishing more. Sorry I didn't save the research article to share with you!