I wholeheartedly agree with this. Doing things on your own each day if possible is extremely important. That way you don't have to wonder where you end and others begin, because you will know what you think and want to do and what's best for you.
Family and friends are important, but they too are individuals with wants, needs and goals.If you can work together on the common goals, great. However, there will always be something that each one of us needs that others not so much.