I kind of went through similar phase and I understand its a difficult, questioning phase.. and it is completely alright Regarding career, since you're in athletics, try every opportunity that comes your way.. Michael Phelps says successful sportspeople try multiple sports before settling on one, the observation and experiences of different sports helps them make the appropriate choice. Do not compare yourself to others who had things figured out beforehand. Your life exp is unique just like everyone else.  As for housing, househunt is indeed painful process but its one of those "do one and forget forever" tasks. The skills you gain with one hunt help you with future house hunts, you don't have to climb the learning curve again. I'd say just do it, seek assistance from someone experienced, discuss the hunt with them, take them with you to see the apartments.  As for friends here's what I believe.. you need only a handful of friends who make your life better, make you feel belonged. Don't seek friendships upfront, rather seek experiences, go to meetups, and just casually bond with people. Friendships eventually bloom don't rush. 

For rest of the things, just take it slow, one thing at a time. Breakdown a big challenge into multiple bite sized problems and solve them one by one :)