Yes, writing is personal therapy for me. If there is something painful or even joyful, it is the poem I create that will be the placemark for that event in my life. Writing a poem is for me, just like that person who is taking a leisurely stroll and stops to read the concert landmark. Once they have read the sign, they take a long sigh while leaning on it to get off their knee and begin their walk again.
Yes, your creative force can sometimes be propelled by an internal conflict. For some it may be their greatest force for writing for me, it is a combination. A combination of internal conflict and creative awe. There is no joy whatsoever that is greater than a freshly written poem or one that I have discovered by another poet. Bliss.