Struggling with Learning Disabilities in the Workplace

Hello, I have had ADD and dyslexia since grade school and I make so many small mistakes that it is difficult for me to work with other humans because they get bothered by my mistakes. I have the confidence to be productive and effective by myself. The thing that bothers me is I am 55 and want to earn bigger and bigger money and have a bigger a bigger life but I feel regulated two tasks that are more simple. For example; I went to a meeting that I’ve been going to every Saturday for a year but this week I arrived a half hour early because I forgot what time it starts. This type of goofball mistake happens to me 3 to 5 times a day.