For me drinking was my coping strategy.
So when I had stress, sadness, irritation, whatever it where all reasons to drink to feel better.
When I quit drinking I knew I had to find a replacement for that and that was a hard nut to crack.
I found multiple things that helped me. One of them is learning to talk about what bothers me so I could get the edge off. I found new hobbies to get myself distracted and get energy from.
And chocolat was a to go to as well instead of drinking 
This place helped me a lot as well. I came here every day to check in sober. You find this thread here: Checking in daily to maintain focus #64 Feel free to join if you like.
I think in recovery we all need people around us who understands where you are going trough and can help you if you need some.
That can only be people who are addicted themselves. So find your tribe!
Here (TS), AA/NA, rehab, recovery dharma, smart recovery, etc.
And for the stress? Sorry but that will stick around for a while. No matter what your dad does. Quitting your habit is stress no matter what. It gives stress to body and mind so that’s why you have to be prepared to put in a lot of work. I would recomment reading here:
What's YOUR plan? and here Resources for our recovery In the last thread you will find all the good books about recovery and podcasts and all other way to support you in the years this forum is alive. It’s a true treasure!
I hope you will find your way in recovery as I did.
Be well 