Should is a bad word. Could, Would like to or Want to or Will is better.
Instead of I should do this or that, substitute, I could do this or that. It is a choice this way, not a must have.
Have to is also one of those phrases that implies stress or outside pressure.
Instead of I have to hand this deadline in by noon, I could say, I get to hand this deadline in by noon.
In either example, replacing should or have to with I choose to…supports the notion that the person doing the action is responsible for the action and an outer force is not making that person do it.
So, instead of – I should stop eating fried foods or I have to stop eating fried foods – I tell myself – I get to stop eating fried foods 0R I choose to stop eating fried foods OR turn it completely around and say what I really mean – I get to/choose to eat healthily prepared foods.