keep thinking and practice

i was keep thinking what will happen if i do that and be like that, is it risky or will not gonna effort my future, or just bring me to the wrong way. my head hurt just because i keep thinking about all this. if i suddenly give up to achieve what i wanted then i'm gonna start crying because i'm afraid that i will regret it..aarrggghhh!!!! its hard to believe that i cant make a choice. all in this earth is not always it will gone when the time is come,same like him and me. i think i'm gonna give up,but i still gonna keep practicing.