Whether I should be an exchange student or not

Recently, I have had the idea that I want to be an exchange student, because I want to see what the outside world and experience different cultures. But there is a big problem that bothers me. I may not graduate from my college punctually (in time). But I really think it's a good opportunity which I should, and need to (must) seize. If I make the wrong decision, I might regret it for good. :(

I just added some more natural phrases in italics. 

Also, on the topic.  You have the rest of your life to finish your degree, but you may only have one chance to study abroad. You should go if you can.

That's what I think, anyway.