It is really important not to get attached. One day you maybe working hard, next, the whole company gets sold, all your plans, efforts and ambitions dissolve without any warning.
Once again, don't define yourself by position, or past accomplishments, tomorrow they can be meaningless. Do your absolute best at any moment, but assume this can be the last day on this job.
The whole company could be sold behind your back. It's a war. The business belongs to Mars, he, he... literally!
