Some things that help me at least:

• Only use bed for sleeping.
• Don't use screens at least an hour before bed.
• Keep phone out of arms reach when in bed. Ideally in another room (these devices weigh heavy on our psychology, and the further they are from us, the less distracting they are).
• Leave blinds open at night so you wake up with the sun. Try to sync your body / circadian rhythm with your environment if possible.
• Get lots of walks and outside time during the day. If you have a lot of energy, work out more during the day.
• No coffee / intoxicants in the evening.
• Drink lots of water.
• Don't try to fix your sleep problems at night. Most of your remedies should be getting on the right foot the next day, and making habits of those.