There's not only one way to go in that direction. I don't understand why you think that if it comes from within, then it's superior, when the result of less animal suffering will be the same either way.

This is the difference between intrinsic and extrinsic motivation. Intrinsic motvation is superior for long lasting, sustainable change. Using extrinsic motivation is why you have to come here and post about it and get someone to give it to you. And why, if someone gives it to you, then stops... you'll likely revert back because the extrinsic motivation is gone. That's what I mean when I say your behavior is only as reliable as your source of motivation. If you rely on others to make you do the right thing, you're only as reliable at being vegan as the person that's giving you a hard time (or however they hold you accountable) is at motivating you. Obviously if you have intrinsic motivation, that's better. You don't need others, and when you're in a situation where you don't have someone watching over you telling you what to do, you can count on yourself and still be the good person, make the moral/ethical choice, etc. What happens if that person disappears? Or your internet connection goes down and you can't communicate with them? Or they're busy doing something when you're struggling and are about to gnaw down on a steak? Or you change your opinion of them at some point because you find out they're a criminal or something, so you no longer value their opinion or their motivation? You will only be as good a vegan as the person is at motivating you to do so. It's unreliable and likely not sustainable.

Extrinsic motivation is a source of motivation, and it's better than nothing, but cultivating intrinsic motivation is obviously better. All I'm saying is I would encourage you to find your own reason for making this change so that you don't think you have to be reliant on someone else making you do it or holding you accountable. Hold yourself accountable. Be accountable to yourself.

But saying "the result of animal suffering will be the same either way" isn't true. Obviously, if you had intrinsic motivation to be vegan, you wouldn't be here right now. You would just be doing it because you hold yourself accountable for being a good person. If you cultivate intrinsic motivation, you're more likely to stick with the behavior than only doing it if someone's watching you. And that affects the amount of suffering that is a result of your actions.

It's fine if you believe you can't, and you need someone else to do it for you. That's better than not. But I would still encourage you to try. You don't need someone to steer you in the right direction. You know it's the right direction, or you wouldn't be asking someone to tell you to do it.

If you care to answer, maybe you can tell me why you struggle with it? You said:

I used to be vegan, but my beliefs changed and therefore I was no longer morally bound to go in that direction.

Then why are you here asking someone to ask you to do it? How did your beliefs change such that you stopped? And since you no longer believe it's a moral decision you'll make on your own, what part of you wants someone else to make you do it?