Quotes by Things That Are Hard Children build self-esteem by doing things that are hard and learning what works. Clayton Christensen things-that-are-hard self-esteem children If you're going to be unreligious, it's likely going to be due to reflecting on it and finding some things that are hard to believe. Daniel Kahneman things-that-are-hard reflecting believe The deadlift also serves as a way to train the mind to do things that are hard. Mark Rippetoe things-that-are-hard mind way