Do you have an "all-or-nothing" mentality? If you're going to do something you're going to give it your all. But, if you can't give it an intense effort and do everything perfectly you're not going to do it at all.
This all-or-nothing mentality can get you some great results in life but it can also hold you back from getting things you want. For example, if your goal is to organize your closets but you're procrastinating because you don't have the storage containers you want to use and you know you need a few consecutive days to get it all done so you may never even start. However, if you started with one closet and worked in phases you would be done in a few months!
Same can apply to healthy living. Maybe you don't want to start trying to lose weight because you don't have the time or energy to workout, drink water and change your diet. But what if you started with just one thing? Start by exercising a couple times a week. Then add drinking more water and changing your diet. Little by little you can make progress towards your big goal.
You can be closer to your goal in a few months or you can be where you are now. Your choice. Time will pass regardless of what you do with it.
To get past your all-or-nothing mentality you should tell yourself things like:
-Small steps are significant.
-I am doing my best.
-I am making progress towards my goal.
-Every change is important.
-I can do hard things.
Changing your mind is probably the hardest part of changing your body. Don't underestimate its power.