Sleeping is extremely important for our well-being and is seriously undervalued in our current modern lifestyles. Having a good routine helps to keep our circadian rhythm (sleep/wake cycle) functioning: 8 hours per a night is recommended for adult and elderly.
Making small changes to your daily bedtime routine will help the quality of your sleep in the long run. Start by ensuring all the lights are as dim as possible so your body can start to switch off. Focusing on breathing slowly in and out has also really helped me when i have found to be overwhelmed some days.