Conversely, being good at a single thing will give you the necessary mental tools to get good at other things too. One of the biggest hurdles beginners face is not knowing how to push through "the gap" and reach a level of competence where they can actually produce work that aligns with their vision. Being able to draw on the memory of already having done that in the past can be very powerful, and can help you acquire new skills more quickly and with more tenacity than others.