Just realized you had asked for what treatments I had.
I use medication and cognitive behavioral therapy. They are a tandem duo and neither alone would be nearly as effective.
First, do yourself a great favor, read the book Driven to Distraction. It's a super easy read and will give you a great amount of insight.
Second, try to really re-evaluate your fear of medication. ADHD medication gets a bad rap. My opinion is that it's because it's over diagnosed in children and abused heavily at the college level. For those who truly have ADHD, however, it can be a life-change overnight. I mean that.
The ADHD brain lacks dopamine, this shortage is a major component of the behaviors that follow. A low amphetamine dosage should have no ill effects on the patient (you're not trying to get high on speed here..), but what it does do is artificially boost the dopamine levels in the brain. This covers the shortage that your brain is constantly trying to fill by jumping from exciting thought to exciting thought or through thrill-seeking. Suddenly, your executive functions are much better and you can direct your focus far better. You'll never be "normal", but it's a world of difference. For me, not only did I immediately regain better control over my focus, but I also found I could transition better, I didn't procrastinate as much, and I wasn't as emotionally reactive as I normally was which has always been a major issue in my personal relationships.
This alone, however, won't fix all the issues. Once you have the medication and are able to wield your focus, the next step is unlearning all those bad habits you've learned over 40 years of struggling and compensating for your ADHD. This is where Cognitive Behavioral Therapy shines.
These two things together, along with accepting and learning to appreciate your brain for what it is and making use of tools (lists, calendars, regimented scheduling, written goals, etc.) that complement your way of thinking will go a long, long way.
Anyway, your mileage may vary, and your feelings on medication are between you and your doctor, but this is what worked for me and what I recommend to everyone I know who is thinking of seeking treatment. Best of luck.