Whenever you are sitting around with your face in your hands wondering what to do when you are bored, it may come as a surprise to you to know that it is not as big problem as you may think. Actually, being bored can be a good thing. There is even an article on this very site highlighting the historical significance of boredom and how people wondering what to do when bored has led to some great developments for civilization.
Trying to think of things to do when you are bored, can lead you to some creative thinking. You may dream up elaborate fantasies of what you could or should be doing that can lead you to some great ideas for what you really want to get out of life and where you may want your life to lead. For example, if you are sitting around bored and fantasizing about what it is like to be an actor, you may be discovering an inner talent that you never knew about. Or if you are thinking about what it would be like to live in another country, you may have the makings of a diplomat or traveler. Whenever you start daydreaming like this when you are bored, don't think of it as a waste of time, because you may be learning about the very essence of who you are.
Another advantage to being bored is that it can lead you to discover new interests. When you are tired of doing the same things all the time, you are more likely to branch out and try something different. Now you are probably not going to be crazy about every new thing you try, even though it may be fun to experiment with new things. But you are going to find that when you are branching out and trying new things, you will be adding new interests that you never knew you enjoyed doing so much. Sometimes it is hard to know what we would like to do until we actually do those things. It can be easy to fall into the trap of thinking that if you would like to do a particular activity that you'd already be doing it. But you will surprise yourself that different activities can have aspects of them that are attractive to you and you will want to add them to your regular routine.
But you don't always have to do something completely new. Sometimes it's just a matter of finding new ways of doing the same old thing, which makes it not the same old thing anymore. For example, say you like to go fishing at the lake all the time. You can still go fishing, but maybe you might want to go to the shore and do some salt-water fishing. Or if you like to watch movies, maybe you can find a different kind of movie than you normally watch, like classic silent movies.
There are lots of ways to defeat your boredom. Use your imagination and do some research on the subject. This site is one of your resources to answering the question, what should I do when I'm bored?