Staja -- it is really hard to pick the healthy stuff over the junky stuff if the junky stuff is readily available. For me, I had to pretty much clear the house of that stuff until I felt really established in my habits.
And even now -- when I have well established good habits -- it can still take alot of mental energy to make the right choice. Some days it can be exhausting simply choosing a salad instead of 3 bagels with peanut butter.
I don't want to completely dictate the kind of foods my husband can keep in the house (so I don't), but there is no denying it would be ALOT easier if there was never unhealthy choices close at hand. But life is rarely that simple.