For an investment, the key priority is: to actually make money when your judgment is correct.
Avoid the mistake of "feeling it will rise and tentatively buying in lightly". If it indeed rises over 10%, rushing to increase your position by several times or even ten times the principal due to just earning a few tens of thousands is a big taboo.
The depth of understanding determines the position weight. The correct approach is to go in heavily from the start, never adding more in the middle, setting a clear profit-taking target, and selling your principal and part of the profit once you reach the target. Do not feel greedy when prices rise further, and do not blindly catch the bottom during high-level corrections.
The core is to preset a clear settlement goal, rather than indulging in the self-satisfaction of "being correct in judgment". If you regret due to earning little from buying less, once the market turns, you will be trapped—especially when the initial innocent probing evolves into a self-righteous "master operation", you often end up in the predicament of "understanding everything but not making any money".