Just needing to unload, maybe others are going through as well

I'm a 28 y/o husband/new father (first one just a few days ago!!) and have been married for 4 years. I started reading the ADHD Effect and I'm loving it. However, I can't help but feel saddened and frustrated during this otherwise joyous time. I feel like all the progress I felt like I made with my wife's and mine relationship has been crumbled back to square one. She says I am using ADHD as an excuse as to why I haven't done something such as "You're saying you didn't empty the shredder trash because you have ADHD." I think an excuse is something to say to get out of doing something and an explanation is why something didn't get done before and want to do it now. 

I've read up to the point in the book where it talks about the Parent-Child dynamic and it speaks so loud to me. I'm trying extremely hard to stay positive and my appointments with my counselor and my doctor (for medication) can't come soon enough. I want to confide in friends, but I don't know 1. how to bring it up and 2. know who would be supportive and helpful during this new phase in our life. She will read the book once her and the baby get on a more stable schedule and she has time, but it's just hard for me because, like the analogy about looking at time through a paper towel tube, I'm in the now and can't be patient enough for the future "not now".

Does this ring true for anyone else?