Be Your Own Boss

One thing all GOOD bosses have in common is control.  It may be loose or tight.  It might be that they are ever-present and up in your mix, or they might just call to check in.  Some measure success by the outcome of the employee's labor.  Whatever the style, a good boss is able to direct activity to acheive desireable results.  There is always a goal in mind, whether they choose to disclose it or not.
When we are young we have pipedreams of being a doctor, lawyer, teacher, fire-fighter, parent....  Have you ever heard of a young person who plans to beg on a street corner for money to feed a family?  Ever hear anyone who plans to become an inmate at prison or just a rogue traveller, walking from town to town doing odd jobs to get by?  There may be some, and they will likely succeed.
For the most part, people want to find fulfillment and even happiness in life by achieving some particular goal. 
I suggest that you start early, keep it in mind, and plan you activities around it.  It's about balance and focus, even if there is variance in the plan, make sure you are moving the right direction.
At this point, when life is just unfolding, you may have more control than you think.  Self control is the most difficult, but most satisfying claim you can make.  Know that the thing you do today can keep you on track or throw you off for tomorrow.  It is very possible to maintain self control, even when you must serve some one else.  Choose to be in control, even when some one else is the manager.