Horrible day, but a great day for personal growth!

I had a horrible day today with my family usually I would have stuffed my face. I even almost did do that. I got a small bowl of ice cream out ate 4 bites then was like hay I am going Vegan this isn't vegan so I got rid of it. Turned to my pantry hand on door knob and then said no I am getting out of here and away from them for a little while. I drove to local rails to trails to take a long walk on trails walked an hour first half hour crying out my problem lack of help from hubby with son issues and sons lack of respect towards me blah blah blah. Then on the way back I thought of different ways things could have went down. Then realized hello I can't change them but I can change me and how I let what they do effects me. I use to always treat others as I want them to treat me. But my family has this way of making me feel used and kind of like a door mat so to speak. But they can only do that if I let them.
I am putting myself first and foremost when they ask something of me my question back will be would you do it for me then yes if not then you can do it for yourself and shouldn't expect me to do it for you. I am also going to in a round about way make DH step up to the parent plate, b/c I too am going to ignore things (to an extent).
Now I just wish this darn headache would go away I have had it all day!