I got my account back first try without barley any proof

I recovered my account in less than a week by showing screenshots showing my email being changed, the date the account was created, and all previous usernames. I believe reaching out to the BBB significantly sped up the process. What should i do to further secure my account??

I recovered my account in less than a week by showing screenshots showing my email being changed, the date the account was created, and all previous usernames. I believe reaching out to the BBB significantly sped up the process. What should i do to further secure my account??