I had a hard time holding back at first too. Monitoring my heart rate with a Fitbit took care of it pretty quickly. I make sure I’m near the max rate during rounds, and I try it near resting rate during breaks. Having my pulse displayed on a watch at all times helps immensely. Sometimes I feel like I’m pushing too hard when I’m not and other times I feel like I’m slacking when I’m actually not. And as stupid as it sounds, it’s got this deep breathing relaxation timer that I use after cool down that’s pretty cool. On top of that, seeing a graph of my heart rate during the entire duration of the workout after I’m done and my stats puts things into perspective. I’m not guessing how many calories I actually burned, how much time I spent in each zone, stuff like that. It’s a great $125 investment IMO. My wife bought me my initial one as a birthday present because I was having some sleep issues and I was curious about how much I was actually walking around at work. I’d have never bought it for myself because I thought they were too gimmicky. After her surprising me with it, I really liked it. I bought a newer version about 2 years later because it had more stuff I wanted. Rowing, bikes and treadmills are way too monotonous for me. I don’t mind outdoor biking, but it’s too much of a hassle.