Keep trying, you'll do great.
So I googled "act as if" and found an interesting article on lifehacker, you might like to read, here is an excerpt "Studies led by Iris Hung from the National University of Singapore had volunteers visit a local cafeteria and asked them to try to avoid temptation and not buy sugary snacks. Some of the volunteers were asked to make their hand into a fist or contract their biceps, and thus behave as if they were more motivated. Amazingly, this simple exercise made people far more likely to buy healthy food."
Act as if is also the name of a band, but I remember it as advice from a 12 step program, according to Wikipedia it is also known as "fake it 'til you make it".
Basically keep acting like a person trying to get healthy and you will become a person trying to get healthy.
best to you
First day disaster
