my approach to this consists of 4 security "levels": 1. I have one "throw away" password for services I don't give a fuck about 2. 2 passwords for ordinary services (breach cannot cause any serious harm and I can reset the password over my e-mail) 3. 2 other passwords (pretty easy to memorise but almost impossible to guess) that I use for my school mail, IDE, other mail accounts 4. a unique password coupled with two factor auth I only use for my primary gmail - as long as I have ownership of that, I can restore access to basically any other account I use.

ad. 1: I find it a pretty good idea to also have a secondary junk mail for signing up to these services - just in case they give my e-mail to someone for spamming or get breached.