Sounds a lot like where I was a few years ago, but yours is a little worse. I began our marriage quite lackadaisical but have gotten things back in order for the most part. There were a few rough years in there.
All the usual advice applies, make frequent use of the sacraments, including confession, pray at least three times a day, or better yet, throughout the day. Especially ask for help from the Holy Spirit and St. Joseph. Fit a rosary in there. Consciously intend to imitate Christ. Start slowly, but be a man and take control of your house and put things in order. A man doesn’t cheat on his wife. You should be willing to face torment and death first. Only a selfish fool of a child would do such a thing. If traveling with your job is an obstacle, get a new job. If tv is an obstacle, have it disconnected. If you don’t already know what to do, you will, you just have to do.