I now have it down to 10 minutes or less. There was a time when I was young that it would ruin my whole week if they lost. I've punched holes in the wall, cried, and once kicked my ex-wife out of the house after the Rams lost to the Cowboys in the playoffs. She filed for divorce a few weeks later.
Looking back on it now I have to wonder, WTH, was wrong with me? Allowing something that I have zero control over to cause me to react like that? Of course, back then copious amounts of alcohol and other substances were usually at play during those meltdowns. That's not the case now, nor has it been for many years. Maybe that's the difference.
Doesn't make me less of a fan than anyone else. It's just that I have zero control over what this team does on the field or off, so why get all bent out of shape over it? The only one I can control is myself and sometimes that's a struggle in itself.