Yes, You Can
It is okay to have doubts and fears about the outcome of a thing but try not to dwell in the fear or let the fear of failing consume you. Fear is the only limitation to our successes in life. Once you can deal with your fears, every other thing is possible.
Whatever the circumstances or state of things, I just want you to know that you can be that person you so want to be, you can achieve those dreams of yours, you can certainly attain those great heights you crave for. But you have to first of all, believe in yourself, your abilities and strength. No one will believe in you if you do not believe in yourself first.
Paul apostle in the book of Philippians made a very strong statement, he said 'I can do all things through Christ which strengthens me'. We come to see that the strength and power to do anything is from Christ Jesus. When you have the strength of God in you, there will certainly be no impossibilities.
You cannot entirely do it on your own, you need the strength that comes from Jesus. Our strength will always have limits; there are places we go that our strength always fails. There is usually a limit to what we can achieve using our own power but with the power of God working in us, we have the capacity to break limits.
Do not let anyone deceive you that you cannot make anything out of life. Do not give room to fear; you can make it, yes you can. Live your life with this mindset and things will certainly work out for you.
Shalom!