A specific question leads you to a specific answer.
A vague question leads you to a vague answer.
The best for What? Best at work? Best at School? Best at sport? Best doing what?
Ok the short answer is make a list of the whys
Let me tell you grab pen and paper and start writing what you want to accomplish like have a car, have a job, make one million dollars by the end of the year, travel to Hong Kong, Visit Tibet, Donate 3000 to the international red cross. DON'T stop your imagination, then sort them according to your wishes or priorities. Then for the first ones make a list of the things that you can do to reach those goals, lastly work for that (you will be motivated) just remember the whys and you will be working.