I did think we where both, this is 100% my mistake.
Not being bitter about it, rather I should have been more strict and not offered business favours for free. Things like not charging for late payments, relocation and so on. 100% my error.
I mean, I'm glad you're taking this opportunity to do some soul searching, but the bottom line is that someone owes you money that they're not paying you.
If you were robbed in the street, would you be laying in bed worrying about whether you had a robbable face? Would you be trying to think how you could have been friendlier to your muggers?
Not being bitter about it, rather I should have been more strict and not offered business favours for free. Things like not charging for late payments, relocation and so on. 100% my error.