I have mixed feelings too. I had a traumatic childhood/adolescence, and I'm just starting to realize that it does affect me negatively in ways I don't even know. I do have some animosity towards the people that abused me and the people that didn't take care of me when I needed it. I'm working on realizing what led to what and I'm in therapy to help out with bettering myself.

So I guess the quote is more so about living in the present, but it's not as simple as reading a quote and going "hey, that's right! I'm going to do that!" and miraculously you're not blaming others, it's a process especially for those with a significant trauma history due to abuse and neglect.