All things in moderation. A little bit of comfort food can actually be good for you. Positive feelings help bolster your immune system as much as healthy foods. There are people with great outlooks on life who eat sweets regularly who are still spry into their 70s and 80s.
Personally, up until 12 years ago, I was eating a lot of crap, but I also dealt with a lot of emotional issues such as unforgiveness and disappointment. I got cancer and almost died from it. I had to follow a strict nutrition plan to recover, but I also had to deal with forgiving those who had wronged me and other issues like that.
When I refused the bone marrow transplant and walked away from conventional medicine 11 years ago, I was in such bad shape the doctors told me my life expectancy would be months maybe weeks.
While I still eat a much healthier diet than the average person, I allow myself things like chocolates and junk food in moderation. I also watch my stress and attitudes just as carefully.
I wrote a book about my experience. Go to my profile to find out more.