You may find a new opportunity that you hadn't noticed before.
You may rejoice in the different-ness of the occasion.
You may be able to break out of a rut that you previously felt trapped in.
You may be scared - but you may also be exhilarated.
You may learn skills that you didn't realize you had.
You may find passions that were previously buried.
If what you are doing now is not bringing you happiness, there is no reason to think that it will bring you happiness if you continue to do it. Doing something different will give you a chance at something that will bring happiness.
And what would happen when I shake it?
You may find a new opportunity that you hadn't noticed before.
You may rejoice in the different-ness of the occasion.
You may be able to break out of a rut that you previously felt trapped in.
You may be scared - but you may also be exhilarated.
You may learn skills that you didn't realize you had.
You may find passions that were previously buried.
If what you are doing now is not bringing you happiness, there is no reason to think that it will bring you happiness if you continue to do it. Doing something different will give you a chance at something that will bring happiness.