A little disconnect

There might have been a little disconnect between my dad and I.  He is again pressuring me into doing things without understanding the difficulty I am going through.  He is sometimes getting the upper hand in these conversations and I am losing a bit of ground in these discussions.  I am worried that there is a big power advantage that he has over me and I cannot get the balance of power back.  I don't even want it to be a balance of power I just want it to be a regular calm discussion as we have become used to lately.  I hope that I get the balance back somehow.