Something that is very hard to do is allow the negative people in your life go. A lot of people will stay in a bad relationship that then leads to a bad marriage. It's not the best way to live a life and it's a way to find happiness at all. You may want to consider that there are many ways for you to tell the people around you that they need an attitude adjustment, but it's hard to kick them to the curb when all the broken promises are over and accounted for. You may simply need to make a clean break, even when it comes to those who you love the most. Keep in mind that when you are dating someone that is not the best for you; the negativity will pull you down faster than you know.
If you are worried that you simply don't have it in you to leave the other person, then you'll need to get the support of others. Talk to your spiritual leaders and also talk to your loved ones to help you find the strength to leave. You may need to cut it off with some of your connections with the person, but it's easier for you to walk away from someone when you have one or two people helping to support your decision emotionally.
You will also want to think about eliminating some of the other toxins that are present in your life. Basically, you will need to get negative people away from your emotional stand, but you also need to protect yourself from the vulnerability of drugs and alcohol which is a doorway Satan can use too influence you. You may also find that your job is draining. If you are having any type of issues that seem to be bringing you down, then you'll need to cut all ties. However, when it comes to the relationships of loved ones, you may need others to help support your decision and also help back you up.
This may be the worst thing that you have to do, but eventually you will get out of the negative situation and your life will improve. Not only will you be able to improve the way that you see yourself, but the negative people and aspects of your life will no longer hold you back from the things that make you happy.
Colossians 3:1,2 If then you were raised with Christ, seek those things which are above, where Christ is, sitting at the right hand of God. Set your mind on things above, not on things on the earth.