Whenever we're faced with a challenge in life, whether it's of the physical, emotional, or intellectual variety, it's easy to convince ourselves that we'll never be able to excel in the task at hand. For example, the very idea of trying TRX could potentially be incredibly daunting for the first-timer.
While we're caught up in our own fear of failure, it's easy to forget that our bodies are amazingly adaptable, and are more than capable enough to take on any challenge thrown its way. In fact, the only obstacle that we need to eliminate is self doubt.
After all, the body achieves what the mind believes, so don't be afraid to push past your limits.