Here's some tips I've found helpful throughout my career, including b-school.
1. Stay organized - If an appointment isn't on my calendar, it doesn't exist and I will miss it. If an assignment, reading, or deliverable isn't in my task list, it won't get done. If an email is in my inbox, it requires my attention; otherwise it gets filed or deleted. I use Outlook for all of these tasks, but know many people like Gmail or OneNote as well. Take a few minutes everyday to make sure your calendar, inbox, and task list are up-to-date. Take advantage of shared calendars (Google or Sharepoint).
2. Saying no - Many of the type-A high-achievers in top b-schools learn the hard way that it's the first time they can't do everything. You can't even come close. Of all of the worthwhile, awesome opportunities and activities I've had, I've found I can take advantage of maybe 20% of them. Don't wait until your calendar is full to say no. If you fill your schedule with commitments in the first quarter, you won't have bandwidth in the winter or spring when something else cool comes along. Everyone jokes about FOMO, but it should be renamed ROMO (the reality of missing out), because you will.
3. Prioritize - Set some overarching goals for yourself and prioritize them. During my first year, these were 1) Recruiting 2) Social activities/networking 3) Family (very understanding wife) 4) Leadership/involvement and 5) Class. Going into my second year, the priorities have shifted: 1) Family (baby now) 2) Leadership/involvement 3) Social activities/networking 4) Class and 5) Travel. I'm fortunate that I don't have to recruit again. I used and will use these lists as a guide for where I devote my time. Remember, this is your time and it's likely the last time you will have 2 years to devote to personal and professional development. There is almost nothing you
have to do. If you're not enjoying something, stop it... now.