Bite off more than you can chew.

If you want to see growth in your life, you must bite off more than you can chew. As a body builder friend of mine once said. The only way for your muscle to grow is to make it work more than it currently is able to. In stressing the muscle, in essence, making it bite off more than it can chew, the muscle breaks and is obligated to grow back again stronger than before. The same apples to all in life. If you only do what you are comfortable doing, you will never achieve anything more than you already have. Just like if the weightlifter stops lifting heavier weights, his ability to lift will never increase.