Discrimination is an important part of mastery.
That is the advice of the masters. You must have a singular obsession that will enable you to achieve your objective.
The above is a regurgitation of what the masters say.
It is true, without focus , you will never achieve mastery as you will be all over the place.
This year choose that one thing and work on it until you have mastered it.
It will come to pass. Its not too late.
But you have to take action. You can wish it, dream it, feel it but without concrete actions it will not come to pass.