Looking for help

I am looking for help.  I cannot afford to consume large meals if I were to consume no more than 1600 calories or so.  This is a way for me to consume more fruits, vegetables, and whole grains.  That is a good thing.  This is because of the simple fact is that I eat a poor diet and I have gained weight.  I unfortunately have no real set goals in mind other than that.  What I ate today wasn't healthy but not unhealthy.  I consumed a peanut butter and preserves sandwich, macaroni and chicken for lunch, and now I hope to consume something healthier for dinner.  I finally realized that eating healthy is harder than I thought.