the queston you should ask yourself my friend is:
If you hadn' t tried at all, would you be happy now?
if the answer is yes, then maybe this business is not for you in the first place. If you want to fly there is nothing else you want to do for a living (at least that s the way it s always been for me). and yes, that s considering the long days, the though times ahead, the long and hard way to get there etc..
the way i see life is as a big bet. always try and believe, otherwise what is life about?
best of luck