It will be EASIER for you to succeed in a vocation for which you already have the talents in a well-developed state;, but you CAN succeed in any vocation, for you can develop any rudimentary talent, and there is no talent of which you have not at least the rudiment. You will get rich most easily in terms of effort, if you do that for which you are best fitted, but you will get rich most satisfactorily if you do that which you WANT to do. Doing what you want to do is life, and there is no real satisfaction in living if we are compelled to be forever doing something which we do not like to do and can never, do what we want to do. And it is certain that you can do what you want to do.  

The desire to do it is proof that you have within you the power that can do it. Desire is a manifestation of power. The desire to play music is the power that can play music seeking expression and development. The desire to invent mechanical devices is the mechanical talent seeking expression and development. Where there is no power, either developed or undeveloped, to do a thing, there is never any desire to do that thing, and where there is strong desire to do a thing, it is certain proof that the power to do it is strong and only requires to be developed and applied in the right way. All other things being equal, it is best to select the business for which you have the best developed talent, but if you have a strong desire to engage in any particular line of work, you should select that work as the ultimate end at which you aim. You can do what you want to do, and it is your right and privilege to follow the business or avocation that will be most congenial and pleasant.