Once you're in the academy there's a lot of support for getting you through the whole thing. Long gone are the days of 25% attrition, where they searched for reasons to cull the weakest part of the class. Today they choose who they want, who they think can make the grade, and then they push, pull, scare, encourage, tutor and do PT at dawn until you make it or quit. There have been cadets before you that were dumber, weaker, sadder, and most other shortcoming you want to choose, who managed to graduate with bars on their shoulders. As long as you accept the training in the spirit it's given (hauling you towards success, not trying to drive you out) and keep working there's a good chance you'll get through.