Measure yourself against evidence from the person you were becoming yesterday.

Comparison to other people is noisy, because you see their results without their circumstances. Comparison to your recent self is much cleaner, since you have full access to the conditions. It also has a shorter feedback loop, which makes it useful rather than merely encouraging.

Pick something you can actually observe about yourself over a few weeks and watch that. How fast you recover, how honestly you handle being wrong, how much you get done on a bad day. The evidence is right there.