Read children’s books. Read a variety of books. Read aloud so you can hear the way proper grammar sounds.
Listen to news on the radio, and watch news on the television. Read newspapers, magazines.
Play grammar and language games on the computer, or on your phone.
Commit yourself to changing this and you will.

I am so grateful to read your post on this grammar issue and you are absolutely correct. I feel your post was directed it me and it is difficult to change this grammar thing around, like you said “is deeply embedded in a person’s brain.” How do one change this if it’s not Dyslexia. Any help?

Pat Bellace :As a former English professor (in the private sector now for 25+ years), I would like to add a note of caution. Grammar — correct or incorrect — is deeply embedded in a person’s brain. The origins are what we heard in childhood, and the patterns have been reinforced a million times over by the time a person reaches adulthood. In this case, very poor early schooling may also have been an issue. Not to recognize the difference between rough and ruff is not just a spelling issue. It’s a fundamental word recognition issue. Very simply, it is very, very difficult for an adult to change these things. You are asking the person to “rewire” his or her brain. Certainly the issue should be addressed. Certainly help and tools should be offered. BUT in the interests of the organization, it might also be helpful to identify someone who would be willing — discretely and with confidentiality — to review this person’s written work before it is sent out.

Your last sentence says a lot about the idea in business that educated, trained administrative assistants or secretaries are not needed any more. After many, many years, I finally have a job wherein I go over the letters my boss sends out and fix them before they go out. Too many employers want to “cheap out” by cutting secretarial/clerical jobs.