nightmare

2 nights ago i dreamed something like i was in my neighborhood alone and scared of something..Keep running (small distance) untill getting home. I remember that i knew why I was running. Something chased me, it was like a demon.I runned 'till my home and then just runned all home from him because i didn't knew how to contra-atack him. After this it all was cleared, i was like in a white room,all white when like ...my inner-side appeared and told me how to defeat the demon but it was not like a fizical atack, it was more like mentaly. Anyway i was not scared anymore and after i woke up. Sorry for so less details , i couldn't quite remember all things. What does this means?