Your attitude can be your most valuable asset. For it is with your attitude that you make use of all the other assets. If you have a well-developed skill but don't take the initiative to use it, you might as well not even have that skill. If you have great opportunities and fail to take advantage of them, they won't be of any value to you.
In fact, you do have more than enough intelligence and skill to reach any goal you set for yourself. You do have ways to access the resources necessary to achieve anything that you're fully committed to achieving.
The defining factor is your attitude. Because your attitude determines what you do with each moment, and those moments, all added together, form the substance of your life.
And your attitude is yours to choose. It ultimately depends not on any outside factors, but on what you decide to make it.
You have a whole world full of good things going for you. Adopt an attitude that enables you to always make the best of what you have.