Your trading edge should define your size.

If you’re profitable trading certain patterns, stocks, or meme coins, and your usual size is $5k per setup or $500 on swings, that size came from experience and consistency.
A common mistake is trying to carry that same size into markets where you don’t have an edge yet. Many crypto traders suddenly move into stocks, commodities, or options and trade the same size, even though the market dynamics are completely different. When you enter a new market, you’re basically starting over.
So size has to grow step by step. Start smaller, learn how the market moves, build understanding, and only increase size once your consistent profitability supports it. Position size has to scale with experience in every market you trade.
Edge first. Size later.