To combat distraction and memory issues, write down whatever task you want to be working on at the moment, then set a timer (preferably one that automatically resets) for 10 minutes. When the timer goes off, make sure you're working on whatever you intended. If not, get back to it.

Use self-talk to remind yourself of what you intend to be doing so you can minimize your distractibility. For example, if you're hanging up your coat in the closet, say aloud, "I'm hanging my coat in the closet" over and over to keep yourself on course and prevent yourself from (or at least minimize the possibility of) doing other things once you've open the closet door.

Find ways to make seemingly mundane but necessary tasks interesting. Play familiar music, make a game of beating a timer, promise yourself a reward for finishing, work with a partner - something to break the tedium.

Minimize distractions - de-clutter your environment, turn off audible email notifications, turn off your phone when you have an important task to complete.

Learn how to categorize. Categorizing is an important organizing skill - it's needed to set up systems at home (e.g., where to put things in the kitchen) and at work (how to set up a filing system). When categorizing, think about how a library, store, or other relevant establishment has items organized. For example, the library has books in such categories as cooking, self-help, financial, etc. You can organize your own books and paperwork using similar categories.

Use colorful, fun labels to catch your eye and remind yourself of where things belong, as well as to remind yourself to put things away.

Take a photograph of your organized space (once you get it that way) and compare it to your actual living space to see if anything is out of place. If so, of course, put things back where they belong.

Ask for help - organizing is a learnable skill, but even with knowledge and good intentions, people with AD/HD often have challenges with follow-through. It can be helpful to have a supportive family member, co-worker, personal coach, or professional organizer who provides help setting up systems and strategies, and provides gentle reminders and accountability.