hello Richter
there is a Sticky: Insomnia - Can’t sleep! topic in stuff dreams are made of forum … here’s the link https://community.ld4all.com/t/insomnia-cant-sleep/8727
just reading through the whole topic may make you fall asleep 
joking aside, you may find something that works for you in there 
I hope you enjoy your time at LD4all 
and have lots of LDs and make lots of friends too 