Showing physical love towards your child shows that you truly love and appreciate them. Saying that you love them and showing them are two different things, and physical touch has a stronger effect on them.
Allow them time with friends and don't isolate them.
If they spend too much time alone, they will feel isolated and alone which can lead to depression. Allow them to have play-dates and you can even form a group of close friends for your child to hang out with.