Hey bro, you need to worry about how to best be prepared for OSUT so that you can make it to BAC, so that you can make it to SOPC, so that you can make it to SFAS and have your shot at getting selected for the Q.
OSUT is not that hard, but it can and has ruined many a dreams of young highly motivated soldiers with hopes of SOF grandeur.
Get your packing list for OSUT from your Recruiter. Or log in to your future soldier account at futuresoldiers.com and get it there.
Have you completed all the requirements for keeping your 18x contract, such as passing an APFT, completing UF 1141 (Future Soldier Checklist), all your online classes?
Do you have all the source documents that you need to ship, to include your debit card?
Do you have all your finances arranged for, bills set up for autopay, etc. (if needed)?
As was mentioned above, what kind of shape are you in?
Also, how's your mobility? Best way to prevent injury in OSUT and BAC (and anywhere) is to increase your mobility. A foam roller, lacrosse ball, 1" PVC pipe, and some bands will go a LONG way towards getting you as flexible and resilient as possible. Check out Kelly Starrets videos on youtube. Also, Yoga works wonders, and if you can learn some of it before you go you can use it while your there.
Finally, what kind of reading have you done? How educated are you on the SF mission? Can you tell us what the difference between UW and FID are? How about SF history and lineage? I'm not SF, but I can assume that knowing a bit about the organization you aspire to join would go a long way towards your success.
You may or may not have already done some of these things, but maybe there are a few things mentioned that you missed. Best of luck, and like I said above, don't overlook any of the steps, that's when the unexpected shit that lands out at home or in a big army unit happens.