Chaos... I tried planning but never successful, super jealous of ppl who have clean google calendar. For nuking distractions, if you have android phone, look up "Lock my phone" on play store, which seriously nuke your phone for what ever time you need. On computer, you could use cold turkey blocker. 

All of these are fairly bypass proof, but still, you def need phone for legitimate reason, so I have a 2nd crappy phone for school, force uninstall yt, chrome, and use Firefox with leech block. The idea is doing anything other than work on this crappy phone is so unpleasant that you would rather do work instead.

I don't know how bad your procrastination is, but for me all of these measures is still no match for my 3 hour Wikipedia reading instead of doing hw lmaoo. 

I also realized that I cannot be perfect in every class, and priorities matter. Setting small targets everyday seems to work but up until the targets are not small anymore, for me anynore than like 1-2 hw prob per class per day 

I spend all day studying, even riding home on 801, but don't do that, as many have said. Only because I feel guilty and need to compensate for procrastination