Bitcoin Wallet password, which is the best method to recover ?

[Snoopy]

first, keep calm, take a beer and try hard and start thinking, how does your old passwords (you remember) or new passwords (you are using today) look like?

totally random or are they following a "style" which is typical for you? lets say some special char, one-two-three words a number like your birthday e.g. *thisismypassword1942?

if random , stick to bruteforce but dont expect to be successful

if it follows some kind of style, prepare your own dictionary and use a rule file like the one mentioned or use a mask-attack