No one wants to fail, but guess what it's good for you!
The best victories are the ones that are the hardest to achieve.
Think back to something you're really proud of. Is it something that was really easy to learn or did it have a better story?
For myself one of hardest things I've learned is snow skiing. I didn't start until I was in my late 20's and it was hard work, every single weekend going with people that were better than me. I tried and tried and then tried some more putting the work in. Finally after a few years I could hold my own on a mountain. While I'm still not great, I had many failures along that road and those failures made my skiing what it is now. It's also the best feeling to know that it was a struggle and well worth all the effort. I failed often, but the hard work paid off.
How does that relate to your work in the gym? Many people are afraid to try something because they may not be able to get it right the first time. That's not the kind of environment we have inside our walls. Every small step is encouraged and celebrated!
What's the harm in trying for a pull-up every time you come into the gym? Nothing! And what's going to happen if you don't get it? NOTHING BAD! No one will laugh at you. In fact you might inspire someone else to try for their first one.
We see so many people breeze through the strength portion of class, not even scratching the surface of your physical/mental potential. If your form is solid, it's okay to fail. It's how you grow and find your limits.
The next time you're in class and the strength portion is 20 minutes long and you're done with 10 minutes left you might not have tried hard enough. If you drop that 5th rep in the final set of 5, awesome! You'll get it next time. If you're unsure what to do, just talk with one of the coaches.