My sleeping pattern is so disrupted. How can I fall back into a normal sleeping pattern?

Close your eyes, and imagine you're painting your bedroom a different color. Try to imagine all of your senses being stimulated; the color of the paint, the smell, the feel of the brush in your hands, and try to imagine every single step of the way. Try to immerse yourself in the imagination, and you may find yourself drifting off right away. Try doing this at the same time every night.

Whenever I am struggling with getting back into a routine sleeping pattern, I make sure to stay awake until I reach the time I would normally go to bed. Then, I like to go exercise for 30 minutes to an hour about 2 hours before I want to go to sleep. I make sure to tire out my body and my mind, so sleep will come naturally. Make sure that the environment is calming. I like to use a fan for white noise.

i always recommend drinking tea and reading a book it will get you so tired. find one that really interest you

You can try to set an alarm from when you want to sleep, so you get reminded that you need to sleep, its also a good tip to not be on your laptop/pc or mobile at least 30 minutes before you go to sleep, if you're not tired you can read a book or draw something, just to relax yourself, maybe some nice cup of tea with it, and when you start to feel tired, try to sleep, try to get a normal schedule of sleeping, everyday the same hours and eventually you don't need an alarmclock.

There is an app F:Lux which reduces the amount of blue light on your screens. Blue light (daylight) resets your biological clock. If you reduce the amount of blue light you will sleep better.

I find using sleeping apps work well. If you struggle falling asleep that is. I listen to relaxing sounds like rain or storms to distract my mind and it helps me to fall asleep. Also there is the obvious - stay off your phone/laptop at least an hour before bed. Try reading before bed too

Be tired at the end of the day, you got tired by doing sport and doing things during the day. Eat well too.

There are many binaural sounds app. that will put you right to sleep. I used to have sleeping problems and since i've been using them i dont wake up at all and i wake up refreshed. Try them they are free!

Go camping. It'll gaurantee a total sleeping pattern reset if you're willing to go into the outdoors without technology

You can practise good sleep hygiene by sleeping at the same time every day, not using your phone/computer an hour before you sleep and turning all lights off in your room. You can google "sleep hygiene", there are a lot of articles out there about this :)