Leave people better than you found them, meaning attempting to add value to everyone you meet. Make their lives better for having met you in some way, even if it's simply by putting a smile on their face.
Leave individuals in a better condition than you found them. If you are in a relationship with someone who is content and cheerful, strive to ensure that, if the relationship ends, the person had positive experiences, that you helped them develop as a person, and that you added to their pleasure and good times. As individuals navigate the world, assist them in learning to accept themselves in a way that fosters a new sense of safety and trust.
People already have a difficult time coping with life's challenges, so the least you can do is help them find serenity and help them become their best selves. Being toxic or draining is not appropriate. One of the wonderful things about doing all of this for someone else is that you also get to learn those lessons, you'll notice that you are actively growing to be the best version of yourself when you make it a goal to leave others in a better condition than you found them. You should make a big difference in the lives of everyone you come into contact with.