It is not in doing many things at same time that you become successful. Successful men in our days are known not for many things but for one thing. They focused on one trade,idea,business,career or endeavour and stayed at it. This was what brought them their fortunes.
Attempting to learn many things is commendable,but when it comes to gaining mastery,you must be focused on something not many things.
Focus on your strength, on that which is most rewarding and Keep at it. Explore the strength, expand your knowledge on your focus,and only a short time, you will be a force to reckon with in that field.