To be kind & happy, forget all the bad things that people no doubt will say about you and move on. It doesn't matter.

If things are going over your head like school or work it may be even the slightest bit better if you just give yourself a day, hour, or 30 minutes just to make yourself feel better, whether is a day at home in bed sleeping all day or out and about exploring places. It doesn't matter.

Also I myself am a tech lover, but put the electronics down! Go outside for a while! Not too long, 30 minutes, an hour! Play in the dirt, make a little potion made of leaves and twigs, play tag, climb a tree, play with your pets! Don't waste it please.