Hi David21
your past has affected you and it may help to examine the beliefs (about relationships and trust, about yourself and others etc) in a journal perhaps. It could help you to get to what is the core of it all for you.
Rather than seeing yourself defined by your past, perhaps you can see the suffering as a gift of strength and depth of character.
Rather than compare yourself to others and seeing yourself as behind in experience, maybe just know that its all yours once you are really ready for it.
If you start to uncover beliefs that are blocking you, perhaps EFT will help you (
Silvia Hartmann - EmoTrance, Project Sanctuary, Energy Psychology, Art, Metaphor, Fairy Tales, EFT, NLP, Energy Hypnosis, Creativity: Personal Development Tools Created By Dr Silvia Hartmann )
best wishes