We all have challenges in our life, some are huge and some are small. But no matter what, we have challenges to deal with. As with anything in life, how you overcome those challenges will dictate how much success or failure you see in your life. The biggest thing is to make sure you're taking on those challenges with everything you've got, and to be self aware enough to ask for help when you need it.
My encouragement for you is to focus on your challenges, and to break through them to see the success on the other side. It can be easier said that done, but make sure you stay focused, and address the challenges you can address. Ask for help when necessary, and no you can do whatever you put your mind to. God bless!