You cannot please everyone and those that bring you down, you should quit hanging out with these people. You need to hang out with and surround yourself with positive like-minded people who lift you up. You should not have to change who you are for anyone.
We often don't take the time to allow ourselves to de-stress, but it is very important to allow ourselves time to take a break from social media, news and other stressors in our lives. Your mental health is just as important as your physical health.
Make a list of your current habits and a list or habits you would like to have. Are there specific habits you would like to give up or ones you would like to form? Write down the resaon you want to form or eliminate those habits. This will help you to make a plan to acheive these goals.