EXPOSE YOURSELF TO THE THINGS YOU’RE NOT GOOD AT
It’s easy to avoid things we believe aren’t our strengths. If you hate doing something – be it running or double unders or even reading – you’re less willing to go through the process of doing it and, in consequence, improving at it.
You’re only as fit as your weakest link.
This doesn’t mean you should practise legless rope climbs if you’re a marathon runner. Expose yourself to the specific set of skills that could improve your performance within the areas you’re working in. For example, as a marathon runner, your weakness might not be endurance but strength work or flexibility, both aspects that could affect your performance.