For it doesn’t matter how you may feel at one moment, the fleetingness of it all makes it redundant holding on to that feeling forever. For if you are happy, sad, scared, excited, it does not mean that will be your everlasting sentiment.
Don’t think, just because you are sad or scared, that you must or will continue feeling that way. If you are happy and cheerful, don’t worry about these feelings changing. For the fleetingness or if all becomes a constant in your life, and if you can expect it than you can prepare for it.
Believe in yourself, focus on the positive, and know that the little things do not matter and should not have control over you.
This fleetingness is what makes it all precious.