The sentence is already correct. No corrections needed. This is a quote by Albert Einstein and it means that instead of relying on people or material things for your happiness, set goals for yourself and work towards achieving them. This way, you will have a sense of purpose and accomplishment, which can contribute to your overall happiness.

The paragraph is already correct. No corrections needed. This is a quote by Albert Einstein and it means that instead of relying on people or material things for your happiness, set goals for yourself and work towards achieving them. This way, you will have a sense of purpose and accomplishment, which can contribute to your overall happiness.