Is charging my iphone too much bad?

I'm on my iphone 24/7 the only time it rests is when i'm asleep! I'm really worried my charger just broke on me cuz i'm literally charging my phone 24/7! I just bought another charger.

Overcharging your phone does weaken the battery, but your charger might have needed a fuse replaced. Or could be a connection broken inside the wire.

If you use your phone and allow the battery to drop to around 20% then fully charge again then its ok.