In some cases you may not need to hire an attorney to represent you to get the same result that someone would get with an attorney. However, there may be very good reasons to hire an attorney. So it is important to discuss your situation with an attorney before you decide to represent yourself.
Most attorneys are like me and don't charge for an initial consultation. Take advantage of this and find out if you do need an attorney's help!
Many people who are arrested for DUIs or simple possession of drugs end up getting their cases resolved with very little attorney involvement. For example, drug diversion of some type is available for nearly everyone arrested for drug offenses. (See DRUG CASES section below) Again, check with an attorney to decide whether such a resolution makes sense in your case. If it does - you often can do that yourself and thus save money.
Consult with more than one attorney - compare reputations, prices, and your confidence with each.