Go deep with a few things instead of shallow with everything. Depth is where you find out who you are.

Sampling everything a little keeps you comfortable, because you never get in far enough to be visibly bad at anything. Depth is where the useful information lives: the stretch where it stops being fun and you have to decide whether you care enough to keep going. That decision teaches you more than ten new activities would. Breadth shows you options; depth shows you the person doing the choosing.

Take one thing you are already a few months into and give it a real push this term instead of adding something new. Go past the point where you would normally drift. What you do there is worth knowing.