It depends on you and, since you want to do it, go for it.
But you also have to think about those who are around you, occasions in which you /have/ to eat, even if a small amount (Such as dinners with family/friends/coworkers/etc. Or any other occasion of the like).
And then there is you. Will you be able to really fast, indefinitely? Won't you miss a certain food, won't your body crave texture? And if you usually insult yourself/think bad of yourself/etc., then maybe you should tone down this just a notch. Maybe try this out for a few days - let's say four. And on the fifth, maybe you might have an occasion. Who knows. You gotta plan it. On that day, you could allow yourself one solid meal, or two. Then go on a liquid fast again, longer than before. So let's say a whole week. And then break it with one solid meal or two. And then again fast. On the third fast, assuming that you didn't 'binge' or eat anything solid when you shouldn't have (Whether it's because someone made you it, or you just reached for a snack), continue the liquid fast. If you did, however, eat anything solid when you shouldn't have, then repeat the process again.
Again, I don't know your situation. I don't know whether you have anyone else who would spot your food behaviour, or lack of food, for that matter. But what I can say is this: Plan it. Think of the good and bad, whether you like it or not. That, including your 'will' to actually liquid fast, would be extremely helpful in the long run. So don't just walk through this and do it without thinking about it thoroughly.