Believe me pal, you will really mis whatever you are doing now, or what you have not. So take some breaks and do what ever you may imagine to do now. I don't say break everything you do, just take some time doing other things you may wish you should have done when 18.

Because there is no turn backs in time (for now at least). Stucking in the things you like now and not trying else may lead to not even know what you would like to do.