Lots of research has shown the benefits of writing in a journal. Richard Wiseman in his book, "59 Seconds: Think a little, Change a lot", suggests 5 things that we can write about in our journals that will help us to feel happier, more content, and more grateful for our lives.
1. Write about things or people you are grateful for. Some people (including myself) have gratitude journals where we only write about what we are grateful for: great things that have happened, great circumstances and people. This helps to remind u that there are things that are going well in your life and helps you focus on the positive.
2. Write about the most wonderful experiences in your life. Describe the event and how u felt. This helps you to recapture the great feelings of those times.
3. Write about what you would like your ideal future to be like. Imagine that u have worked hard and have achieved all your goals and ambitions. Your dreams have come true. This helps to refocus you on your goals and gives you vision and hope for the future.
4. Thinks about someone important in your life and pretend it's your only opportunity to express to them how much you appreciate them. Write a note to them in your journal. If u want to give them the note... even better!
5. Think back over the past week and write 3 things that have gone really well for u. The events can be major - a promotion or new job, or trivial - like finding a parking space. Write about why u think each event went so well.
Writing about these things will help to focus you on the positive things in life, help you to re-experience the joys of the good things, recapture the love u feel for the special people in your life, give you hope for the future and put a smile on your face. Try it, u may like it! 

Do you write in a journal? Have you tried before and stopped? I always thought I had to write everything that happened during the day, and if I missed a couple of days there was too much to catch up on and I gave up. Several times. The journal is your tool tho, u can write as little or as much as u want to, as often or not as u want to. U don't have to be a slave to what u think a journal should be.
It has been shown in research that people who record what they eat in a journal (or other medium) lose more weight than those who don't. It helps u to be conscious of what u r putting in your mouth, and may help u to resist things u know u shouldn't be eating because u don't want to record it in your journal.
Journal writing helps u to process what is going in your life, it can help u get through traumatic events and stressful situations. Pouring out your anxieties and worries on paper helps you to overcome the feelings and move through them. You can write a vision of what u would like your life to be, it can be your prayer to God.
Cancer patients who journal and meet in support groups do better than those who don't.
Writing a journal can help you no matter what stage of life you are in.
Tomorrow I'll tell you what kinds of things you can write in your journal to help make you feel happier.