Is wanting to be a professional b fisherman a logical dream?

i know i have what it takes and my life revolves around fishin. i realize that there are only about 150 guys in the whole wrold who make a living fishing but ever since i was about 10 years old i have done absolutely everything i could to become a professional. people tell me i need to have something to fall back on which i do but i also think that they think i wouldnt make it . what is your opinion