When we are going through changes we are faced with unknowns which often create a sense of anxiety for us. Small amounts of anxiety are healthy it lets us know we are motivated and encouraged by the upcoming changes that are headed our way (it feels manageable).

The importance piece is to not allow our thoughts and anxiety to completely overtake our circumstances and derail us into becoming completely consumed by the anxiety.

Here is a helping way to start that process:
Catch your thoughts. Notice what story/narrative your thoughts are telling you.
Collect evidence. Does any of the facts and hard evidence support the negative thoughts? Notice that feelings are not facts.
Challenge your thoughts. Debate yourself, by using the facts to disprove your thoughts and pull yourself back into reality.