It is generally not a good idea to completely sacrifice yourself for any objective. For example, once I planned a positive event for good friend, yet in the planning I didn't consider any of my needs. We went through with the plans and afterwards I was spent for days. I could still honor my friend and take care of myself too, but I didn't do that, and I paid a price.
Some personal sacrifice is necessary in life, but when you give up all your needs and wants, you generally deplete yourself in ways that are unhealthy, and in turn, result in less or no good for anyone. Instead, look for the win-win situations when you serve others and take care of yourself too. That's the ideal.