What is it about hearing the national anthem at the end of tough training that brings grown sailors and soldiers to tears?

How do you separate solid, genuinely good advice from total fluff when you're trying to master a complex skill on your own?
Does the ocean feel more mysterious when you are swimming off the boat at night?
If a jeweler won’t buy second-hand silver jewelry, what’s the best way to sell it for a good price?
Do you prefer challenges that test your physical endurance or those that require mental patience?