I know that this must be very scary for you. I also had the same diagnosis. Unfortunately, there is no treatment yet and it is progressive. All you can do is make lifestyle changes to keep it at bay as long as possible by staying physically active and stop smoking if you do smoke. I also do many types of challenging mental puzzles and exercises to try to keep my mind sharp. I also recommend that you take care of your mental health to reduce depression or anxiety which can go hand in hand with such a diagnosis (whether this means cognitive behavior therapy and/or meds.

It might be helpful to see a cardiologist if you haven't already. The same mechanism that is blocking your cerebral vessels is the root cause for cardiovascular disease. A relatively inexpensive (usually less than $100) to check the level of calcified plaque (CAC) in your heart arteries can be done without a doctor's prescription necessary. You may be able to head off other problems since at least this is treatable.

Finally, please don't hesitate to seek immediate medical care when you have any additional stroke symptoms since time can be your worst enemy. Even a minor TIA (which I have also had) can be a precursor to a more severe stroke. Also, don't be surprised if a brain MRI shows lacunar strokes which are caused by small vessels deep in the brain being blocked as well. Many times these are "silent" strokes and are asymptomatic, but are still part of the overall problem that we both are experiencing.

Good luck! Hopefully we can both delay and major impacts and enjoy life to whatever extent possible! Please feel free to reach out of you have any questions and I'll be glad to share my experiences and the knowledge that I have acquired since I have a head start on you.