Sense.

I'm leaving for Texas in a week.

I'm setting out to serve the Lord.

I'm fine.

I will be ok. It doesn't mean I'm happy to leave everyone I love and move to a different country. (Texas really is practically its own country). It doesn't mean that I'm going to be perfect at it. It doesn't mean I'm leaving problems behind. It doesn't mean I'm running away from my life. It doesn't mean that I'm not going to miss every single person in my family, my friends, from my ward, from work. It doesn't mean that I don't have fears, doubts, and even excitement.

it just means

I am calm. 

I've been overcome with a sense of peace that everything will be ok.

Be still my soul. The Lord is on thy side.