Life... possible change of plans

HAPPY NEW YEAR to anyone that may be reading. Well i thought i should post my new years resolutions. These resolutions have caused a snowball effect on my future plans, goals aims everything! I dunno this may be a major change for me.
Ok well lets get to the resolutions first before i start babbling:

1. No dwelling in my problems or feeling emotional just finding solutions and getting things done.
2. To be more critical about my choices and people
3. To stay on target and be organised
4. Really step up in terms of knowledge regarding graphic design and education
5. Do what I want to do, and really be honest with myself regarding life
6. Excersize at least 3 times a week

In being CRITICAL of my choices, HONEST and finding SOLUTIONS it has come quite clear to me that my dream of bringing my designing skills to a next level and even making my own label will not flourish unless i am fully committed. There is no way i can go to uni for 5years to become a dentist and do all the other stuff as well. I have to decide between a) what looks good, what my parents would want, what i am expsected to do with my academic ability, what is almost a guarenteed job, what is safe or b) what i can see myself doing, something that actually intrests me, something directly related to my business ideas, something that i can constantly develop.
See if you havent guess a is dentist, and b is graphic designer which would involve me pursuing that instead of becoming a dentist.
Major contrast guys and it is such a scary choice but i think i will have to go with b... this is so scary after being such a traditonal no uni no science or maths person you are doomed and totaly being reformed these kind of choices are so daunting. Anyway on the bright side i still have a year and a bit to decide. Because regardless of anything i will complete my a levels in biology, chemistry, english and psychology.