stopping another person using my account for game sharing

Its simple change your password

This is why you NEVER EVER hand out your password period and then force signin

If you want to gameshare sure do it yourself never hand your info over the internet

As long as you click force signin after you redownload your profile

However if you do decide to share again this presents a problem as you would have to sign in yourself when you arent the home console

This is why you never share your account details with strangers

so if i change my xbox password it will take my account from other xbox consoles?

Fallout 1st only works for the person who ordered it. It doesn't work with game sharing/account sharing. You also should not be sharing your account with someone from another household. It is against the terms of use, and could get you banned or suspended
for doing it.

If a game, or whole sets of games, belong to another account you can not use them on a different account. This is to stop people game sharing and taking money away from developers. If you have bought games on one account you can only play them on that
account.