Is it better to focus on your strengths or do a bit of everything when training your brain?

I think you should try a bit of everything but narrow down to your strengths and focus on those once you know them. This is because you must know your strengths first. Once you know them, you must play to them because if will be more beneficial and you are generally better at it. In general you should try everything until you know what are your strengths.
First, you must find your strengths. This is very self-explanatory. Try a bit of everything to find what you enjoy and are good at. This will make later work much easier because you know what you want to do. You must find what you enjoy and excel in to make later life much easier.
Next, you must play to your strengths. This is so the things you do are much easier. If your brain understands and is well-suited to a motor skill, learning it will be much easier. When you play to your strengths it is much easier to learn and enjoy things.
In conclusion, you should find what your strengths are and play to them. This will make learning easier and more enjoyable. When you learn motor skills, your brain may be more or less suited to do it. Figure out what your brain is good at and do it.