Why are you wasting a Saturday getting groceries ect? If you think you are tired you will be tired. Even after 11 hour days there is still time to go get groceries, or go take a nice lady out to eat, or grab a drink. This job mentally gets to people and makes them feel more tired than they sould be during the week.
I make more than 95% of my friends, most college grads, I get more Vacay, I have a wonderful house that makes me happy every day I come home, I have 2 cars, a great wife, and I get 4 weeks a year where I can literally go or do anything I want and not even have a thought of ups. My weekends are full of fun things and great meals, and no matter what any hippy millennial says, money does bring you happiness, and most important personal security which brings happiness.
A few of my friends who do make more have to pay for benefits, are on salary and sometimes work longer days than us, and some of them have responsibilities that even when not at work, they have to answer, or respond to an email and handle.
I also feel good hearing my friends who only work 40 in an office type setting how they have to go to the gym after work. I don't, I'm in the best shape of my life thanks to ups, work at a safe pace and follow the methods and your body can last till 55 easy.
Be greatful for what you have brother.