So take a look at what you've been doing in this lenten period. Is it something that common sense would tell you would be a healthy thing to do always? If so, is it possible that your fast is from some form of abuse you inflict on yourself at times outside of Lent?
And if you've added something to your routine that you didn't do before, were you perhaps neglecting yourself by not doing it before?
So the concept of fasting from abuse and neglect of ourselves and our needs seems like a very good idea. Will you be going back to your old ways at the end of this time? Or will you continue as you have been during Lent? Or will you simply try to be more aware when Lent has ended, so that you are good to yourself in your actions or inactions?