Recently I watched a video called I am I must. It was an amazing video. I am a child of God and I MUST fulfill His purpose for my life. How do we know what's God's purpose for our life is? I'll share my story and how I found God's purpose for my life. 
Ever since I was little I always wanted to be a teacher. Teaching was my passion. As I got older I wanted to go to college and open up a Christian based preschool. In 9th grade I took the CPT and didn't pass. I was like that's okay, next year I'll pass. Well next year came and I didn't pass. And the end of that year I took it again and didn't pass. At this point I was feeling like a huge disappointment. And hopeless. Everyone was praying for me that I would have wisdom and would pass. So three times down.. One more to go. Didn't pass that time either. Okay.. Talk about really hopeless! Instead of getting mad at myself for in my eyes "failing" I decided to pray. Around the same time a missionary came to our church and spoke. It touched my heart how God was using her to reach kids and give them a safe house. Right before she came and spoke,God laid missionary on my heart. Like a few days after I failed for the fourth time. Looking back, I couldn't even tell you why it was laid on my heart ( oh because of God ;)) lol  
So when God lays something so heavily on your heart, PRAY! Don't tell anyone.. Pray! Pray for conformation. That's exactly what I did. I always like to include a number of times for conformation. Usually 3 times. 3 times He did! During this time I was in the school of leaders in my church. It was a wednesday night and the lesson was about prayer. We got to pair up in groups of three to pray. I right away said I want Mrs. Wendy and Mrs. Barb! Remember I still haven't told anyone I wanted to do missionary. So I just told them to pray for guidance for my future. And they were praying and at the same time said missionary. My jaw dropped. One.. Two.. Three. It was confirmed. 
There's so many things you have to do to prepare to be a missionary. I'm working on that to do list! Growing and becoming all God wants me to be before I start missions. 
My passion for missions has never changed. The fire in my heart for it never goes away. That's how I know it's my MUST in my life. 
There's a few must in my life like this one. :) 

http://www.youtube.com/watch?v=vlv5vyWF2rI&feature=youtube_gdata_player