Two Simple Concepts I use for Skill & Strength for Martial Artists. (But it works for everyone.)
I learned these from Russian researcher, Vladimir M Zatsiorsky, who was very influential in the strength and conditioning fields.
““Get as strong as possible while staying as light as possible. “ ”
This is a very important approach for anyone that competes in a sport or activity that has weight-classes. It’s also very important for anyone that wants to master their own bodyweight and self-expression through dance, gymnastics or parkour, activities where external load isn’t a huge factor.
The second concept is wonderful for any type of skill that you'd like to develop, not just martial arts.
““Train as often as possible while staying as fresh as possible. “ ”
If you were to apply this approach to any skill you’d like to develop you would do quite well.