Winning isn't what makes you feel good. Growth makes you feel good.
Sometimes they are the same thing. When you achieve something for the first time, it's growth. You've reached a new level. The win feels satisfying. But when you do it for the tenth time (or the hundredth time), it can feel stale. You're still winning, but you're not necessarily growing.
The secret is not to worry about winning, but rather to focus on growing. And the most straightforward way to grow is to learn something. If you're ever feeling stuck, go learn something new. Read, write, think, learn, repeat.
When you're learning, you're growing.