Do you surround yourself with people that are like minded or energy drainers? This is a big part of the person you are in all aspects of your life. Really take a look at your friends, family, co workers... are there people that support your ideas, dreams and ways of thinking? If yes then great you are on the right track, keep it up.
If the answer is no it is time to reevaluate your social circle. this may be one of the hardest things to do but you cant spend your time and energy with people who are constantly trying to bring you down. Their are huge emotions tied to most of these people so if they are constantly telling you how bad everything is and cutting up your ideas it is next to impossible to let these thigns roll off your back.
How to make this chenge? Join some groups, classes, even message boards or blogs of people that you would like to befriend/become. Choose others that will be like mentors. Sometimes it is not even important to for yo to know them, just read their book and take what you can from them. As you get deeper into your goals and intensions you will attract like minded people.
Does this mean that you have to tell some of your not so supportive family members and friends to step off? Not at all, you can be honest with them and ask them to no longer bring you all the bad news, you can be passive about it and ask them what gret things are going on with them or you can jsut stop hanging out with them. As you become who you want to be they will either recognize yor new outlook and disappear or get on board.
Just remember it is not your job to change others, lead by exampl and allow them to be where they are in their own journey.
I hope this helps you on your Journey to a better life.