While you think about how you can treat yourself like a queen, pay attention to how that makes you feel.
So many women have somewhat hidden beliefs that they are not deserving, and that they should rather look after somebody else instead of treating themselves well.
If it feels uncomfortable to you to do something nice for yourself, or if you realise that you are making excuses to not do this assignment, examine the thoughts you have.
This is a wonderful opportunity to 'catch' (aka become aware of :-) ) limiting beliefs.
Once you are conscious of them, changing them is much easier. There are many effective ways to transform limiting beliefs. Reach out if you would like help on how to do this.