FYI, if you think you may have ADHD, you probably meet diagnostic criteria. If you would look to get medication, fill out an online adult ADHD checklist and bring it to your doctor.
People without ADD experience significant benefits from using Adderall because it's an amphetamine--not because they have undiagnosed ADD.
Any amphetamine helps you think clearly through being more alert and ability to concentrate for longer periods of time.