The idea of challenging yourself is one of the pillars of personal development.

By that, you grow as a person and you learn to trust yourself more, which greatly increases your likelihood of having happiness and success in life.

"Life pushes all of us around. Some people give up & others fight. A few learn lesson & move on. They welcome life pushing them around. To these few people, it means they need & want to learn something. They learn & move on. Most quit and a few like you fight."

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Happiness isn't a goal you can simply reach and be done with. It is a constant pursuit that requires continual nurturing and sustenance.

One study found that people who tend to value happiness most also tended to feel the least satisfied with their lives. Essentially, happiness becomes such...