Most of us have experienced this, whether it was for a fleeting moment or it is a current situation we experience on a daily basis.
Sometimes you need to just fake it 'til you make it. This means that a person should smile more often and pretend to be, or act as though she is, happy. We are not doing this to please others or to be fakes. We simply need to do this because it will usually help us become happier, or at least trick our mind/body into becoming more content which then leads to happiness. Smiling more often and trying to be happier or more content will also attract more positivity and happiness into our lives.
There are other ways to find or build happiness, too. Try to maintain a positive outlook on life. Always look for the silver lining and for the blessings in disguise.
Remember to express gratitude for everything in your life. Keeping a gratitude journal works exceptionally well because the action of writing will embed those gratitudes and positive thoughts into our mind. Also, we can refer back to our journal in the future during a time of reflection. (If you have only enough time to think your gratitudes, instead of writing them, that is okay.)
Please remember to try to be grateful for the negative situations in your life, too! The negative or challenging situations teach us lessons and are meant to build character, strength, and gratitude while we are on our journey called life. These are opportunities for growth and may even be tests for us. (I know, I have to keep reminding myself to include the negative or challenging situations in my gratitudes, too. It is often difficult to feel thankful when a situation is sad, hurtful, or unfair.) If you'd like, you can separate your gratitudes into what you define as positive and negative.
If you fake it 'til you make it, you will help yourself bloom where you are planted. It will encourage you to make the best of your situation, no matter how challenging this season of life is for you. Try to smile more often, and soon the happy feeling will become contagious! :-)