Is this enough food for a day?

This is a blatantly wrong method of dieting! Its distinctly revealed by your calorie deficiency, therefore you may be currently experiencing grouchiness, mood swings, potentially severe headaches, occasional fatigue resentment often at people you know etc. I recommend you to consult a doctor for this eating issue you have obtained because this can adversely over a prolonged period of time affect you, in terms of your blood components and nourishment is vital to keep them intact. Also I am stunned to see that you still are capable to work, you may have gauged at how your performance has impeded due to your eating insufficiency. This is a dreadful mistake your are making by deprivation of nutrients please be more health conscious if this is persistent your future shall be bleak! All the best :)