There are many causes for sleeplessness .Anxiety,depressions , over mental stress,etc.
May be there is physical causes for sleeplessness like Hypothyroidism etc.
Consult psychologist for external help and also for diagnosis of ur case.
Health Tips
avoid too much using mobile laptops before sleep.
avoid too much social media.
start physical exercise regularly.
avoid too much eating fastfood spicy food.