I agree, Self Responsibility to me is the essence of self forgiveness. I frankly could not relate to 'forgiveness' at the beginning of my process, so I decided to see it as a way for me to acknowledge something that I have done - accepted and allowed- to exist within me that I have now decided to change or let go of. I usually see self-forgiveness as a tool, just like you use a spade to dig a hole, that's how I usually see or visualize what self forgiveness is for. Focusing on the 'spade' itself is merely looking at it as a tool with certain purpose or potential, but by itself it simply is a thing.
So how I use self forgiveness is to precisely 'dig into' myself the aspects and things that upon writing them out, I realize I need to change, let go and take responsibility for, which comes hand in hand with giving yourself a new way, a correction, a commitment, a purpose of how you are going to redirect your previous doings towards creating a new aspect, habit or way of living that you can assess is in fact something that benefits you and so stands in the principle of what's best for all.
That's how to me forgiveness without such self-honest look and without application, is pointless, it's just like looking at the spade for what it is and not really using it for the actions it is meant to do, such as digging the hole in (analogy of self investigation through writing), then uprooting the weeds that one no longer wants to see there, understand how they got to be part of ourselves which is a recognition point as the self forgiveness statement, and then once that we got the weeds out, there's an empty hole or space now waiting to be filled with new seeds that you are now purposely and in self awareness decide to plant as the new way of living, words, habits or actions that you see are best to 'grow in your garden' which is an analogy of the process of birthing the you, the part that is directed by you in common sense which is in consideration and in assessment of that which will benefit you and be best for you and all.
So, that's how to me I got through the initial reactions to the idea or associations towards forgiveness, and I see it as the tool it is. It is only later upon reading more material, watching more videos and practicing the writing and application of forgiveness that I've been able to substantiate or give a meaning that I can relate better to to the word itself 'forgiveness.'
I share this with the intent of suggesting not to create ideas or make it a very logical 'examination' of what forgiveness is, but rather test it out as the tool that it is for the purposes I outlined up here.
I agree with Kristina, suggest getting to DIP Lite to understand the steps that are part of the process of self-forgiveness, so that it doesn't become simply a statement you configure in your mind, but more like an outflow of a process of self-examination with the intent of supporting yourself to take responsibility and the actions needed to change something in you and your life.
Let us know if you are still unclear about something and thanks for opening it up