One of the least effective phrases that I hear a lot is "When I worked for 'Company X' we implemented SAP a different way - or - our CRM system tracked information way better - or - this is the report we used - or - " ... you get the idea. I've caught myself saying this. We say it under the mistaken premise that it somehow lends more credence to an idea or a different way of doing things. It's a mistake because anyone listening to it is thinking "here we go again" -or- "but we don't want to be Company X". The irony is that the merits of your idea are lost; the audience zones out as soon as you start.
Think about it ... have you ever heard someone (or you) start a point like this and the reaction is "Wow, you're right, if Company X is doing it, we should too!!!" Not hardly.
Let your ideas stand on their own. Get over the lack of self-confidence that causes you to need validation by referencing back to a previous company. Use feedback to help your directs avoid the same plague.
By the way, when I hire a new manager from outside my firm, this is part of the 'fit-in' discussion I have with the new hire. If you're a newly hired manager, it can kill you really quickly with your directs, in spite of your best intentions!