I tend to have trouble sleeping if i do work that uses my mind actively in the evening. So i rather not do anything that will tire myself but engage in activities that are light and relaxing for the body. It takes around 20 days to break the habit, once u are there, it would not be a problem.
I soak my feet with warm water at night for 15 mins without looking at the phone, but just relax...and do so thinking about going to sleep. Go ahead and give a try, it helps.