The training mindset is so important when you enter the gym. Why do I believe this? The biggest block to your success is your mind. Everything else could be in alignment, but if your mind is not willing you will fail. This is why you need to be sure that your mindset is right when you enter the gym.
A training mindset is one where you are ready to give everything you have to the workout. You should not leave the gym with a shred of energy to do more. You should feel as though you couldn't have done one more repetition on any exercise.
Your training mindset should have you in the place where you know you are going to experience discomfort, but you are ready and willing to overcome it. As my mentor, Carlos DeJesus, has said, you need to be prepared to “go beyond” in order to grow bigger. When you are doing a set of shoulder raises, don't stop just because things get uncomfortable. Push through the discomfort and finish the set.
If your training mindset is something that is holding you back it is time to make some adjustments. My son, Matthew, and I have a term — Beast. When we hit the gym our job is to be a Beast (capital B). Being a Beast means adjusting your training mindset to endure the discomfort and fatigue you undoubtedly will experience during a worhtwhile training session. It means killing it on every repetition. It means never giving up. These things will cause an adjustment to your training mindset that will simply elevate your training to the next level.
Once you've experienced a modification of your training mindset you will be able to make the mental adjustments as needed. You will learn to recognize when things are just not quite right in your training mindset. At that point you will be in complete control of your training.