Hi, iltph, welcome to the forums! In fact, you are in charge of your credit, and you can most certainly rebuild it. You need information, determination, self-discipline, and time. Everyone here on these forums has been in your situation to one degree or another.
Since I can't seem to do anything to rebuild my credit...
Do NOT make any sudden moves right now. Get everything printed out and get REAL about it. Make a BUDGET and stick to it.
Please list your debts, collections, charge-offs, anything current other than student? Are all cc closed?