Stroke care givet

My wife had a stroke 9 years ago I am her caregiver. I also have a daughter that is intecually impaired that also needs help. I find myself sometimes not been able to cope with both of them. My wife and myself have been married for 45 years. She can talk but has not got full use of her left hand side of body. I need to do everything for her dressing cleaning etc. I also keep the house clean and do all the cooking. I findyself at times wishing that I could do more to improve the quality of life my wife and daughter have but am unable to do so. Is there anyone going through the same situation that can give me some advice.