Florence - be kind to yourself today, this week, this month, this life.
When I was exiting my marriage and was having trouble answering the OP's question my counselor also asked me if I knew anyone that I felt had it right. I did/do. She said - What do they have? They have all the things you mentioned and my very first thought was 'I'll never have that.' That was for other people and I felt fundamentally different - like I was flawed in such a way that it would never work like that.
Today I'm alone and happy enough that way for right now but I am not fundamentally different. I might have some work to do but I'm just as capable of having something real and good as the next person and so are you. We might be a little injured, but we are not damaged.