Mid-Year resolutions

Is this a normal thing?
Resolutions in between the year? Because I'd like to make one.

high take care of my skin/health high do my best at gcse's med be nicer to everyone med drink more water low NO hypochondriac behaviour

These are my resolutions so far. But I want to add. 'do more exercise' but I'm not sure how to keep motivated. Poop my life.