What makes the possibility on all things is our determination towards achieving them, if we already concluded from our mind that we cannot achieve such, then there is nothing that can help the situation on ground, that is why we must not be limited to the present condition in which we found ourselves in, we have to understand that there is more to do as more is expected from us only if we are being determined, irrespective of the challenges ahead.
That is why is good to have positive thoughts before approaching your goal, and it will help you to achieve anything you want to achieve on earth by starting laying a good foundation that will make it easy for you to achieve for others people to learn from you.
When you know that there is nothing that is permanent on earth, and you continue trying your best to turn things around for your wish to come to reality, it will make you to achieve success.
but if you feel you can't change your situation for good, there is no way you can change it for good because you have pronounced it from your mouth to weak your faith.
Do what will make others people to know that you have the knowledge, before they can give you the opportunity to participate in some activities that will make you to achieve your goal.