I'm not quite as old, but all my friends have already graduated and have moved on to those big fancy careers. It can be intimidating (for me at least!) but I try to take comfort in knowing that I'm better equipped in my mental health and that my life is better settled. This means that I will better be able to focus on school.

Motivation does concern me, but I am trying to balance my work load and classes so I take all my pre-requisites but no semester is too difficult (in theory at least). I also try to keep to a consistent schedule. Keep a calendar and write out any deadlines and exams in one places. This way you can determine what needs to be a priority without too much thought.

Check to see if your campus offers any resources! Maybe there are study groups for your courses? This keeps you engaged and is also a good way to break into some social circles.

Best of luck!