Hello Harvey. Once walking difficulties set in, life becomes very restricted, I know. My heart goes out to you, and to all of us who have problems walking. It is important to grieve for your lost function, but if this goes on too long then you are at risk of depression, and that needs compassionate treatment. There's a great book that talks about the reality slap, and the reality gap. The reality gap is the most challenging part of MS, because there often is a huge gap between the way things are, and the way we want things to be. In addition to the obvious difficulties MS can bring to our lives, this gap in expectations can cause further suffering.
You are in a process of adapting and accepting, which is challenging. In taking on the OMS program you are doing all you can to help yourself stabilise and recover, but if you don't experience recovery, accepting your circumstances and adapting to them is necessary, and I think that is something that needs to be learnt early, because in a worst case scenario, MS can mean adapting to progressively worsening disability. If you can remain hopeful of improvement while still accepting and adjusting to whatever disability you are experiencing, that perhaps is the best approach.
Firstly, you have done nothing wrong and don't need to feel embarrassed. If you talk to your children I very much doubt they will feel embarrassed either. In fact, I'm willing to bet that they will be eager to help you participate. One thing about MS is the revelation of how it can bring out the best in others. Being compassionate and thoughtful of other's needs is what MS asks of the people around us. Being compassionate to ourselves and accepting more dependence on others is what MS often asks of ourselves. Secondly (although it is hard) it can help to practice being grateful for what you do have, and to concentrate on the things that you can do, and not just on what you have lost.
It may mean taking a leap into something that is confronting for you, such as using a wheelchair in order to participate in activities again, or to help you visit your son. It's a big psychological jump, but if it helps you to do the things you want to do, it may be necessary to make that jump. You only use it when you need to, and when it makes things easier for you.
A physiotherapist may be able to help you with exercise for your walking, suggest assistive devices or walking aids, and your GP may be able to prescribe something that will help. For example, Baclofen may assist with spasticity, and Fampyra may help with walking capacity.
If you feel you are becoming depressed, please consider talking to your doctor about treatment, and perhaps a referral to a skilled and compassionate counsellor who can help you to adjust to the changes in your circumstances.
I hoped this helped in some way Harvey. Take care. Loz.