Non-fat or reduced-fat foods could work for you. When they were first introduced, they lacked the taste and texture of the full fat versions. There have been many advances and now, these foods can compete well with the unhealthy versions. Do not be afraid to try these things. You may end up liking the low-fat or reduced-fat versions better than the unhealthy version.
In order to lose weight, it is important to let other people know about it. A good way to start this, is by telling your family what you are doing so they will be aware of your efforts. Another good thing about letting others know, is that they will provide you with all the support that you need.