You can totes do it.
I read some of the replies here and I just wanted to put in my two cents.
Your experience in life can make it hard at times to believe that certain principles are as real as some claim they are, but once you let go of expectation, then you will be receptive for those forces to flow into your life. Gratitide can also be useful vehicle for manifestation because it cancels out expectation. And generally having expectation of any kind will halt manifestation because you are basically trying to order reaity thus limiting all other avenues that what you are trying to attract may come to be. Whenever you start to wonder when or if this is working, stop doing that and think about how grateful you are to have it NOW.
Let go of expectation. You know what you want. Now you follow your instincts and make the moves that feel right, but do it for the enjoyment of it. You are in the process now, so all you need to do is focus on that.
Consider also that wealth manifestation seems to work on level with your belief in what you can manifest. If you start with reasonable intentions, you can build from there.
My experience with this, while I cant say im rich, is that I was a homeless youth at one point and I learned to center my mind around certain topics that eventually manifested everything I needed to have the resources to get a bank account, phone, home, a car, etc. Now that I know what can be done I find myself at the precipice of much bigger things, but it takes time. I suggest finding a mindfulless practice. And good luck.