Kind of a tie between b and c. My motto is don't make a plan, just wing it. Think about it, but don't plan it out. It's gotten me this far, and every time I try to plan, I fail miserably, so... But in the end I chose c, because you can want to achieve something, just don't make any elaborate schemes to pull it off.
I aim big, but I set specific little goals that will help me to get to the big one. Like instead of going all crazy like "HEY IM GONNA IMPROVE SO MUCH THIS YEAR IM GONNA DRAW LIKE A PRO AND EVERYONE WILL LOVE ME" I make one thing at a time "so now im gonna focus on anatomy, in about a month or so I'll start painting landscapes and studying composition, maybe when I feel like it I could try new painting techniques etc"
Wheeew!!! Aim big! People who call you overachiever are jealous that they don't have the willpower to go the extra mile. Always aim above your record; otherwise, how will you improve? How's that for some food of thought?