Sometimes clichés are actually universal truths, like: “There’s always someone bigger, stronger, or faster.” Yes, it’s a cliché, but it is also true. Eventually you will meet these guys on the mat. Your jiu-jitsu should not be based on bigger, faster, stronger; it should be built on technique. Your foundation should be built on solid ground, not on things that fade away, like physical attributes.
Your physicality will wane, and you will only be left with memories of how good you used to be. Instead, you should focus on technique, on the leverage and physics of jiu-jitsu, not the force and the speed. As we grow old we get smaller, weaker, and slower and the only thing that we can constantly improve is our technique. Concentrate on being technical.