Does taking responsibility for your behavior help you grow? Yes. We live in an era where it seems that most people find it easier to "pass the buck" than take responsibility. Does that help anything? NO. Growth requires us to be proactive. Taking a look at ourselves, taking responsibility for what we need to take responsibility for, asking for forgiveness when necessary, and moving forward is growth. Each time we take responsibility we move forward.
So why does it seem easier to "pass the buck"? In the immediate it may alleviate shame at some level but in the long run it causes more shame because the cycle gets deeper and deeper and the shame increases thus making intimacy in relationships suffer.
I encourage you to take a look at areas and relationships in your life where you feel like you have not taken responsibility and do so. In doing this you will receive great freedom and continued emotional growth will follow.