Turn your mindset into positive thinking and practice positive thinking daily. You should focus on completing one task at a time and think only of a positive outcome and how good you will feel when you have completed the task. Never give in to doubt and allow yourself to believe that you have taken on too much and just move on. Don't let your conversations turn negative, when in a conversation it is easy to let others bring you down, especially if they have a negative outlook on life. Don't be tempted to go back to your old ways, turn negative talk into positive and look for the good in everything and in any situation. Look for the positive in those around you and write it down, this way you can encourage a positive attitude to your around. Whatever you do in your day to day always look for the good in it, even though it may be a boring task that you normally hate to do and that leaves you feeling negative, try to find something that makes it a more positive situation. don't get distracted or tricked into going back to negativity, it takes time to change the way you feel and think and if you've been down with yourself and the world for a long time then your new perspective will take a while to register and stay for here.