Seeting a complex password is important after which you should write it down and ensure you've kept it in a secured position so you don't end up forgetting it. Routinely, you could set out a range of time you would normally change your password most expecially if you have the slight thought that there is a possiblity that someone has access to it but while you've done that its necessary to discard the old password that has been written down and the new one written down.
Op thanks for this info God bless you, also I will like to bring to others notice that as you're trying to create a secure password don't forget it should be something you can remember because if you lost access to it then all your security measures is wasted.
Certainly any password to be taken as choice should be memorised and if possible writing down for backup storage, anything that has to do with storing passwords on the internet, count me out because those are very harmful practices and single mistake could bring your world crawing down before your eyes. And our passwords shouldn't be made so easy that anyone close to us could get a good hint and use it against our advantage.
Nothing sure for life, life itself no sure so no matter wetin you go dey use as passwords e still no sure. You fit put all the precautions yet if you no protect your password well and e lick online, hacker go still collect anything wey dem need from you. Wetin important pass for me na how you store the password. Make you no go use wetin you go forget if you no dey write them anywhere so as you dey choose the password make e be wetin e no go hard you to always remember or get a very nice and secure place wey you dey keep your password them and that place needs dey inaccessible.
To me e for better say make we dey write all our passwords down instead of to even memorize am because no be only one platform we dey use. Some people get account for many exchanges due to our government wahala on exchanges, also we get many social media accounts with passwords btt account, altcoinstalk and many more how you go fit put all these accounts passwords for your head wey many time man dey think so many things for real life since e no good to use same password for two different platforms.
But if you write am down for jotter or book, come hide am where nobody to know say such informations dey, he go better pass. I don fall victim for the memorizing thing and my brain fade, I no fit remember again. Na only the most important platforms wey you dey you use e good to put am for your head by always login out when you are done, and login when you won access the platform.
Make we no go put too much security wey go later become problem for us at the end of the day because say we won over secure our assets and account.