write about your experiences as a carer in fact i'd say it's vital you do so. So many people have no idea how difficult and isolating it can be and it will be good for you to have an outlet for your frustrations and a place to share the good moments.
Are you based in the UK? if so are you fully accessing the support available to you? getting a carers assessment is a vital first step to accessing the best support for your needs you'll find more info on the carers uk website