Life altering...

Have you ever had to make a choice? A choice so profound that it had the ability to change your entire life? It seems so important that it can't wait and you desperately try to push it to the back or your mind because you dont want to feel the pressure of decision? I have been presented with a decision. Starting with a very very good swimming oppurtunity. The reason i was introduced to swimming, was when a colleague of my Dad's saw me swim and said "Get him into swim." I doubt she knew that within a few short years i'd be swimming on a state level. Her name is Cazz and she has recently offered to private coach me. A former BYU swimmer she knows the ins and outs of swimming. BYU is renound for its fantastic sports programs, and I know that i'm going to be worked over. While discussing the work i was going to go through over the summer, i began to wonder about my future, if swimming was something i actually wanted to persue in a colligate level. I was talking about it with my parents, Swimming and winning on the levels i have achieved implies that I could be scholarship material for BYU. The Y as most know has gotten progressively more and more expensive, and my goal for attending the Y seems to be getting slowly harder to achieve. But to reach this level, i would have to endure a period of training unparalleled by any highschool coach. But the decision gets hairier. If i were to persue, and succeed swimming on a colligate level, i would (as my competative nature promotes) rise to the top as quickly as possible. This meaning that i would probably have a shot at the olympics. On the other hand, i could stop swimming after highschool and focus soully on school. Get on my feet. But for some reason i cant seem myself in an everyday job. If i found one that never betrayed my interests then i would be fine, but it has yet to manifest itself. I love swimming with all my heart, but I dont know if i could endure the hours of time and effort it would take to make it to a competative colligate, much less an olympic, level. Granted it would fulfill all my dreams and i would have accomplished something absolutely amazing, but would this decision keep me from more important things? Like my mission, or future spouse? Where do my priorities lie in this possibly life altering decision?