Owning a business isn't all sunshine and rainbows, it's a huge sacrifice, what you decide to do better be something that you are absolutely passionate about and are ready to devote your life to. There is no clocking in or out, it's a 24-7, 365 gig. My family has owned a sucessful business since the 40's, passed on from my Great Grandfather, to my Granpa, and now my dad. The reason why all these men are so sucessful is because they have no life other then this business. My dad has a boatload of $$$, yet he hasn't been on vacation in over 8 years. You can say he's been on vacations if you count the business conventions he goes to twice a year, one in Vegas and one in North Carolina.
I've been on both ends of the spectrum, I've worked for and still help out (when I'm in town) for my dads company, I've worked for a friend bartending/managing a small bar, and the days are at least, 12-14 hour days. The profits, if sucessful are unbelievable, but these guys never really get to enjoy their $$$. Sure my Dad drives to in from work in a nice BMW and gets to live in a nice big house, but thats it.. Working for a big corporation has it's advantages, I get full coverage (medical-dental) I have job security, and a union employee. I clock in and out and don't have a business always on my concious. I do want to own my own business, but I made a decision early on in life (through witnessing my dad) that I was going to enjoy the prime years of my life, and when I feel that I am ready to completely devote my life to a business (I estimate somewhere around 35) is when I'll finally take on this venture.
Good luck man, make sure you love what you do, thats my best advice.