Automatically deleting old Gmail email

Like many of you I’m a gmail hoarder. I never deleting anything, just “archive” everything. I “might” need it later, or “I’ll get to it when I have time”. If we get really honest with ourselves, we never will actually get to it, and because we have this buffer, this procrastination opportunity, we grab it. We use words like “but I may need proof of X”, or “I could need to reference this”, or “I don’t really want to put this person in my contacts so I’ll just save the email”.