Your mind gives up on you long before your body does. (Words of wisdom from @Skipper Kelp and @David Sample. Thank you for many words of wisdom, Skip and King!) Do you surrender to comfort instead of pushing past to discomfort? (I do sometimes.) Training your mind is a lot like training your body. Little, consistent changes over a stretch of time make all the difference. What one, little thing can you do today to train your mind tolerate discomfort? - A 30 second cold shower? - An extra round of boxing? - An extra rep on the weights? - An extra 5 minutes of prayer/meditation? - A 10 minute drive without the car's air conditioner running?