Trucking

I’m 40 years old, and I been doing machine operating since my early twenties. I’m damn good at it too, but I decided to switch career paths (yes at the age of 40) So next month I’m getting my CDL and I’m going to start trucking, eventually getting my own tractor trailer to work for myself I was just hoping to get some advice, some do’s and don’t about the industry from people already in trucking . I appreciate all feedback thank you.