I hear you saying you only pick unavailable guys because your father left you when you were very young, that this makes you feel more in control. if you know what the problem is, then you have the first steps in working to fix it. you know you are working with an unhealthy dynamic here so you can work to change that when you see yourself repeating it and force yourself out of your comfort zone to do things differently and make healthier choices in the way of relationships and do them differently so you get the desired results. take care.