What have I done to avert this:
1. Create and have a proper mail address to the account.
2. Create a strong password combination.
3. Writing down my important detail to keep it safely.
What am yet to do but find very necessary and would do:
1. Generate, sign and stake a Bitcoin address to this account.
Everything you have listed is valid. The human brain can malfunction at any time, so we need to have a backup. Writing down your email and password in a paper and keeping them safe is also ideal.
Just after concluding this thread, I see a user seeking help on forgotten password on meta.
Forgot password. Assistance needed. from the user Ambatman. That's to say, it could happen to anyone and so, there is a need to take precaution.
I don't think Ambatman has recovered his account because he has not posted since May 16th. But this user was able to recover his account after sometime in this thread,
Please Recover My account. I would say all mistakes you did are stupid mistake, so it will not be a concern to other users.
I don't see it as a stupid mistake. Most members never thought they would be in this forum for this long. I have joined many forums where I lost interest quickly and never became active. Some persons just choose a random email and password to access the forum but don't have any interest in staying at first. Maybe they began to enjoy the forum and decided to stay but forgot to change these important details.