What do you enjoy? What do you truly, truly LOVE doing? What brings your step a pep and plasters a huge smile on your face?! Are you doing that now? Well, why not?
If you cannot do what you love doing and make enough money doing it, then master what you are already doing. Be the best at it. If you can change your profession in life, GO FOR IT. I encourage you to do it. It is uncertain if we have one or more lives, however according to some physicists, it is not entirety impossible for other worlds to exist right now, simultaneously with our own world. So, if you're not doing what you love, it is possible that you are doing it elsewhere, in another realm. In any case, you can change this reality for your self as well. I did and so can you. Do not place limitations on your power or ability. After all, a person with dreams is a person that is more powerful than a person with just facts.
As I work on my latest product, I am sitting here and smiling, since I am blessed to be able to think about new possibilities and make them into a reality for us all here. I love being able to do what I do and convince other people, very talented people, to do my projects, with me. They are from all over the world and some come to me once, and some come back again and again.
An idea is great, however talent and help is always crucial.
Thus, (I always feel fancy saying thus), your idea and your passion and your desires matter. Make them a reality and get rid of any doubts that were planted in your head, a long time ago. Go on.