While we all have much to be thankful for, it is easy to lose the right perspective.
God's Word helps us keep the right perspective. We deserve God's wrath and punishment. But instead we are offered His grace, mercy, and love. Not only that, but He has blessed us with every spiritual blessing in Christ Jesus and has given us richly all things to enjoy (Ephesians 1:3,1 Timothy 6:17).
You do have much to be thankful for.
Things could probably be better in your life. But certainly they could be a lot worse.
No doubt you have heard the line, "I complained about having no shoes, until I saw a man with no feet...."
Remember this secret: you will never be happy without being thankful. Also, practicing thankfulness will make you happy.