How Much Is Too Much

There are many things I would like to do on top of the things I do on top of what I have to, but how much is too much? Is trying to eventually change the world, making school a better place, working with high tech companies, teaching classes, going to school as a student, going gold/iron hunting, traveling a lot, studying psychology until I have memorized the books, raising funds for schools, and trying to get my message out there too much? Perhaps. Maybe I could divide it up. Traveling, treasure hunting, and study psychology a ton at a time will be done over the summer, and everything else will mostly be done in school, but also be done a bit over breaks/summer.  And bam! It isn't too much anymore! So how much is too much??