Any advice on when you think the Data Storage boom will end?

I get it, we can't predict the future. But I am wondering if anyone does have any idea on how they function when it is time to sell a stock based on a boom ending?

I recently invested in WDC and DRAM in the last couple of months. I have made great gains. I think the AI boom will keep going for a bit longer. However, at some point, the market will be saturated with supply and demand will go down. Does anyone have any advice on how they handle these types of situations?

Do you simply sell when you feel you've made a good increase?