I think better in a discussion, ideas come easier.  I’ll devide myself in two and start a conversation between Oskar and Lewis: Oskar will be the younger one…

Lewisi: Let us talk about responsibility.
Oskar: sounds like a huge theme, here.  Like talking about love, or the meaning of life, or which diet is the healthiest.
Lewis: Indeed it is. But I’m sure we will get to a niche while we’re talking about it, it’s always like this.  You start talking about a world war and you end up accusing your neighbour of not cleaning in front of his door.  Let’s start by defining the word.  What does it mean to you?
Oskar: Being responsible means that you have a duty to deal with, isn’t it?
Lewis: Yes, but there is much more.  You are in a way connected with the duty: you control it, you act independently, if things go wrong you are to blame for it, you take the decisions.
Oskar: For me, it gives one the feeling of being important.  You are somebody in the group.
Lewis: Yes it does, but the aspect of responsibility that seems to me to be the most important is the moral obligation it generates to behave correctly towards your duty or in respect to the other persons involved in the matter … or towards yourself.  And that’s where I want this discussion to go to: about that moral obligation.
Oskar: you want to think about what it means to be responsible.
Lewis: That would be a nice subject for me, yes.  And more accurate, I want us to think about how we deal with that moral obligation.
Oskar: So, where do we start?
Lewis: Let’s take that moral obligation thing: what I like about this is that it concerns a decision one has to take for himself.  I mean, it is not an obligation written in a law, it is an obligation that comes from within yourself somewhere and you yourself have to decide whether or not to bound yourself to it.  If it would be a written law, it would be a binding agreement, but since it is a personal decision to take we are talking about the free will.
Oskar: Ok, whether we are responsible or not is a bound we ourselves decide to take.
Lewis: that’s what the word mean, yes.
Oskar: So there are two principal character in our theater play today: we have a moral obligation, and we have a free will!
Lewis: And if we make our inner-world the stage, we can open the curtains and let the show begin.

Oskar:  Can we find out why it is that we sometimes have it difficult in being responsible?
Lewis: Let’s tart with translating your question in using our characters: why is it sometimes difficult to convince ourselves to obey the moral obligation we sense.
Oskar: of course because we have a free will.  Nobody oblige us, nobody force us to do the right thing.
Lewis: I’m glad you start talking about ‘the right thing’ because I think that moral obligation is always the right thing, isn’t it?
Oskar: Yes, if the person has a true moral.
Lewis: Does a false moral exist?  Does the truth exist?
Oskar: I guess so…
Lewis: When we say: let you conscience talk, what do we mean then?
Oskar: well, it’s an inner feeling, or a voice you hear inside, that act as a guide to the rightness or the wrongness of one’s behavior.
Lewis: Ok, so we presume that that voice always shows us the right way to act?
Oskar: Mmm, yes.
Lewis: well, that’s then the problem here: we hear a voice that is not ours, but still we hear it inside of our body, and we didn’t generate that thought with our mind and we presume that that voice speaks the truth…
Oskar: euh … yes … and ?
Lewis: If we would be sure that that voice was ours, we would be obliged to obey its directions.  But we aren’t sure.  There is place for discussion, in us, you see?
Oskar: Yes, but somewhere we know that that voice speaks the truth, don’t we?
Lewis: Voilà, here we are.  We can play ourselves false.  Actually we do that probably all the time.  And if we do not listen to our inner voice, there is nobody but ourselves to justify.  Guess that’s the reason there is religion: to give us a policeman up there, who càn check our behavior.  But that’s another discussion, isn’t it.  I  presume we answered our question, didn’t we?
Oskar:

.

.

.