1. Write down your worries - writing you problems down not only relieves the stress, but if you organise them too, you can start a plan of action to combat your troubles.
2. One day at a time - often when you look at the big picture, you will start to become overwhelmed; I know the feeling! Thus, by taking one day at at time; organising that day and only focusing on what you are capable of doing in that day, you will be in control.
3. Talking - often when you talk to someone else about a problem, they may have a few wise words which may help you see things in a different light. I understand that not everyone has somebody to talk to, but there are charities if you feel you can talk to no one else.
4. Yoga - This may not be for you, but I often find that when you do yoga, you can have some piece of mind for a few minutes. Alongside this, you will be able to relax.
5. Understand - the most important, but perhaps hardest thing to grasp is that worrying doesn't change a thing. A very famous speech titled 'Wear Sunscreen' noted "worrying is as useful as trying to solve an algebra equation by chewing bubblegum". In other words, it doesn't change a thing. There are absolutely no benefits from worry. Thus, it might be better to go with the flow.
Best Wishes,