Do not chase people. Be you, do your own thing and work hard. The right people who belong in your life will come to you, and stay.
Chasing people around in life will be of no benefit to you in the long run. This is mostly because you can't make people be who you want them to be, people will always do what they truly want to do, deep down inside. What you can do is make extraordinary effort each day to be you, and to do what is in your heart, and work hard at it.