Well, my landscaping experience limits itself to a golf course and I was in a small team of 15 full time workers.
I would mow greens every morning for 4-5 hours, and the rest was whatever job was needed to be done, from laying sod and cleaning tree wells to shoveling new sand into bunkers. It hard on my body at first but I got used to it. The people I met there were also super relaxed, enjoying the sunlight, taking care of plants, drinking coffee and smoking cigarettes while talking about TV shows or old movies.
It all comes down to luck to be honest, but I wouldn't recommend applying to jobs for landscaping contractors as those can be a lot more stressful(but you might get more money). I'm not trying to be rude here, but maybe what you need is a "mundane" job where you take care of things. Maybe it will do you good as much as it did for me.