password every time l try to get into blog

If anyone else has this problem of nearly pulling your hair out because every time you sign i n you have to set a new password up, last night l set up another, twelve hours later it would not work then my brain woke up and realised l couldn't remember when was the last time l cleared my temporary files out, so went and cleared tem and first time signing in I WAS IN MY BLOG so try that as it works.