Well, not knowing what you do, how much you had taken out in withholdings, and what kind of deductions you have, it's hard to put together a picture for you.
Naturally, you will want to take the exemption for all family members. If you can itemize deductions (mortgage interest, med and med insur over a certain amount, contributions, taxes you paid for a residence and to the state of MI) as long your deductions exceed the STANDARD deduction, then you should do that...if not, then you take the standard deduction. Also, certain contributions to retirement accounts are deductible and the stuff you put into the 401K or other type of plan they have at work usually lops a chunk off the top of your earnings, so it's a good deal for saving on taxes and then you don't get taxed while the investment is gathering interest (or dust, in the last few years....but they tend to cycle back).
Usually, people strategize at the beginning of the tax year or even before that...you need to plan proactively, so you should already be planning for the next couple of years and figuring out where to push earnings or where to spend to get a deduction you can use...that's what I do. Also, it's a combination of things...watching how much you have taken out in withholdings, planning your affairs to take more deductions, and yada yada.
Hope this helps some...