People will come into your life and they

People will come into your life and they will act like forever.
Then the same people leave in the middle of it.
People should never be the thing that makes you feel okay. They should be a part of your journey. Not all of it.

Don't stay alone doing nothing and then blame people for leaving.
Search for things you like, work like crazy, travel and learn.

At that point, you will know that people aren't the thing that makes you feel secure.