Create a book cover

I am writing a book and I need a book cover image. Hard to explain... I am looking for an image of a man or a woman, teary eyed, pushing a wheel barrow that contains his/her inflated heart. Ready to blow up. A representation of how hard life can be for people cursed with an overdose of compassion for all living creatures. Cartoon style or even better, a realistic pencil drawing would be great but I am open to any submissions. Thank you.