We have to give thanks to God, no matter what it is.
God likes it when we talk to Him. Sometimes it can be hard to understand what God is telling us.
God also understands on what we need to work on in our future. He also gives us to understand more on what He wants us to do, like giving thanks.
He lets us choose on what we want to say what we're thankful for, no matter what we think of to say it to Him positive or negative. He will take it both ways.
Here are a few verses that talks about it.
I will praise the name of God with a song;
I will magnify him with thanksgiving.
Sing to the LORD with thanksgiving;
Make melody to our God in the lyre!
Here is an example:
Attending a party
Attending church to make new friends
Anything else you can think of is up to you