It is good to work toward understanding of what goes through your mind. A dream has gone through your mind for a reason -- whether sorting out collected observations and feelings, or realizing input.
If you resist reflecting on what's in your mind, then what will you do when it happens again? It is not bad to be a gatekeeper of your own mind. If God is in conversation with you during the day, then there is no reason to block what He might say to you in a different way at night. Just recognize that dreams are not defined truths, or solid predictions, or earthshaking commands -- they are vague hints.
In approaching dreams, start with how you understand each object, and the emotions that accompanied the visuals:
I was walking outside of a convenient store
When we walk, we are in independent control of where we're headed.
We go to convenience stores to make choices, get things. Resource.
and a stranger set me on fire.
Someone outside your realm of influence caused you trouble. Setting on fire is the beginning of something that will spread faster than you can control.
It was scary and it was difficult even when others tried to help me.
I tried to stop, drop, and roll, but it was to no avail.
Following time-tested protocols didn't solve the problem. People like to tell us what to do, what will work, but in real life the troubles are more unpredictable. Lawsuits come up, people steal from us and lie, incriminate us... it does not always go well.
Even though others tried to help me there was no water available at the time.
This shows it wasn't just smarts, but resources that would be necessary -- like funds. There aren't many ways to put out fires -- smothering, which you already tried -- and dousing with water, which you didn't have access to.
Well someone finally poured water on me
Water is often mysteriously connected to people in dreams. A large body of water can show public masses. The gesture of pouring here was a refreshing attempt to cool and stop what endangered you. It was social and thoughtful.
Sometimes people also see water --especially rivers and fountains -- as the lifegiving presence of God.
yet I was left unsinged except for some of my hair.
Hair is an adornment that is an extension of our bodies, a protective covering, something we change so others perceive us differently, an appearance we assess and define others by. "A blonde, a crew cut, a bluehair"
When our hair is damaged, it is like our reputation has been scorched. In the dream, you didn't endure real injury but had a little bruising in appearances.
Finally I went to the hospital and I
As said above, a hospital is a place of healing, where experts tend to us and we can let go of our own responsibility for a time. Sometimes ministries or general response efforts appear as hospitals in dreams. It could also be a job center, a school that retrains... anything that leads you through the restoration process.
my clothes were not burned but my hair was of a different style.
Two forms of protecting covering compared -- your appearance/reputation had a makeover.
Your head is where your decisions are made; your body is how you move forward and implement the decisions.
Imagine if you were a marketing exec in a corporation that went through a painful takeover.... people got laid off, and you were able to find a job as a preschool teacher. After that, people saw you as a teacher, not a marketing exec. You still had an income, an influence, stability, but endured some changes. You were still able to implement, but didn't look as glossy and tangle-free.
Now after you look through how the visual symbols tell a story -- and correct anything I said that didn't fit -- then start to look at how an imposition of risk and volatility might fit into your life, or situations you observe around the world.
Is there anything you need to pray for, attend to, rethink...reflect on it as a conversation, an infusion of insight.
When Joseph understood the dream showed drought, he did not have a command from God, "Now you musteth build grain silos!" The compassion within him stirred to find solutions for what he projected people would endure. Love, faith, and sensibility drove the response to the dream.
the fact that your hair was burned can indicate there will be a lasting impression in your wisdom/understanding of what happened to you. The hospital indicates a place of healing