At any time, you can decide to change the road you're on in life, take a new direction, follow a new trail. You are the only one who really knows what you want from life and if you're on the right road for you. You are the only one who can fulfill your dreams and receive the joys and happiness that come from reaching those aspirations and goals.
Don't expect others to be responsible for your happiness and your success. You must take control and be in charge of your destiny and day-to-day situations. Take advice (most of the time it's free) and listen to what others have to say and what concerns they have; it's important to have different points of view. But always validate those words of wisdom with your own set of standards and make sure that the advice has meaning to your sense of reality.