Did I Bring on The Bad Juju??

This is going to sound crazy, but oh well. Do you ever wonder if you accidentally sabotaged yourself or your relationship by doing stupid little things that somehow triggered bad juju? For example...I used to have PIN numbers and passwords that were from me specifically--ya know, about something strictly dealing with me, not anyone else. But then I'd be dating someone and things would be progressing nicely and I'd change them to be reflective of our anniversary or nickname. However, it seems that when those changes were made (not just in the most recent relationship, but in ones past as well) that things started going wonky and the waters began getting rough.

I tried to tell myself I was crazy and stupid for even kinda believing that, but it's just interesting. Like seriously, the second I changed a password to be a special little thing between us, we started getting snippy and arguing. And in the back of my mind, I kept thinking OMG, is this because of me???

And then I'm forced to wonder is it that I was so worried about negative energies and karma that I actually brought them upon myself? Or does using them really bring on crap? I have no clue if any of this made any sense, but it's something that's been on my mind for a while and I felt I had to get it out there...