trade companies u know well

I started trading $Sea(SE.US)$ as I purchase from Shopee frequently. I'll also check what Sea Grp is doing, and even if from fundamentals point of view it's not "profitable", ultimately I buy into my long-term belief of the company. So when it's green I may realise my profits but totally no fear when it's red (these few weeks), in fact I'm happy I can DCA and buy the dip!! but as a moomoo-er once said, dont need to buy EVERY dip, and also don't fomo and learn to trust yourself!!