I agree, standing in supermarket aisles does sometimes happen for no reason other than stresses and strains of life. It can be quite disorienting.
So sorry to hear you are going through this STDG, sounds like a lot on your plate. please do try and take care of yourself. Enlist help if you can.
Faffing happens to us all you know. It really does, and yes, it's humbling, especially in the modern technologised world where we maybe think we are on top of things.
I don't have too many puzzled "what did i just read?" moments now or much vertigo, but having those did teach me to be aware of others who may have hidden abilities and disabilities, not to judge and to be a kinder person.
Of course we all like to be early for things, and to shoot through our shopping etc there is an addictive pleasure in dong something competently and quickly, but we are all different and it's better to be late than be late, iykwim.
Take a breath, and be kind in your thoughts: some people really are stressed out, and sleep deprived, and just about able to be upright!