Expectations lead to disappointments, but if you rely on yourself you will never be disappointed. You know what you need and want to fulfill your life, don't depend on anyone else to see your vision if they are focused on their own.
I'm not saying don't accept help or constructive criticism, everyone needs assistance and guidance; but you have to be selective, your future depends on it. Stay focused and alert and your decisions will follow suite.
Learn to be your own cheerleader, who wholeheartedly believes in you more than yourself, other than God? And who will sacrifice everything to see you succeed, other than God? If your response is 'me' that's correct. But if your response was a parent, friend, or significant other you've got some growing to do. Sure those people may help along the way, but ultimately your success depends on you.
In those times of doubt, despair and uncertainty have a talk with yourself. Whenever you're having a bad day stop what you're doing and sit in silence. Clear your mind by coaching yourself into positivity. The challenge in each day is to find the positive in every negative. Don't let anything stop you from reaching your dreams !