Life is like a train ride.
The passengers on the train are seemingly going to the same destination as you, but based on their belief in you or their belief that the train will get them to their desired destination they will stay on the ride or they will get off somewhere during the trip.
People can and will get off at any stop.
Just know that where people get off is more of an reflection on them, than it is on you.
There will be a few people in your life that will make the whole trip with you, who believe in you, accept that you are human and that mistakes will be made along the way, and that you will get to your desired destination - together, no matter what.
Be very grateful of these people.
They are rare and when you find one, don't let go of them - ever.