Whether you're fed up with what you're doing now or you really want to improve a mediocre existence, you can make an instant decision to change now so that you can enjoy a better, more rewarding life. Sometimes, you just need to act first and reflect later instead of continuing to pile up dreams without doing anything more about them. Changing your life around is a journey, but you can handle it.
I suggest writing out what you'd like to change. Think about what's working well, what you dislike about yourself or situation, and then pick out the top things that you would like to change. Read everything that you've written. You've just created a quick, personal road map for change. Over time, you can refine this road map, For now, you've broken down those large and looming "it's all too hard to change" feelings and turned them into some concrete steps.
The next step is to take action! Figure out what you can within the next 48 hours to make a difference in your situation. Don't think about it, just do it. We make the mistake of saying that it's not the right time. Anytime is a good time for change.
Be patient with yourself. You may have taken some big steps to change your life in a few hours, but getting used to the changes will take some time. Don't slip back into your old ways or your old circumstances just because you feel scared or uncertain about your choices. Give yourself 6 months to a year to adjust to your new climate. After some time has passed, if the change didn't make you happy, then you can always backtrack to the way things were.