See all those negative events as experiences that inspired you to now become stronger. Everything can be of value, it is only a matter of perspective.
You can choose to view yourself as a powerless victim, then you will continue to suffer for the rest of your life – because of your perspective. Not so much because of what happened, but because of how you choose to view it now.
Or you can choose to view yourself as someone who has gone through a lot of things that eventually inspired you to become stronger.
You can become happier because of the sadness you experienced. You can become more confident because of the insecurites you have gone through. You can become stronger and more empowered because of the weakness and powerlessness you have felt.
It is never too late and it doesn’t matter what you have been through – you can choose to feel better again. You are capable of dealing with everything that comes your way.