How to determine what good is?

What do you consider the greatest good or rather that which you aim at in life? No doubt there are probably many things that are noble to be achieved or won with; such as health and wealth, and other things (Aristotle writes on deliberation how to achieve the ends). However, for a Christian is there any such thing as deliberation? Ought we to choose or rather aim at x because of various reasons? As said before in many of my post several who claim to be Christians allow worldly things to cloud their thinking which causes them to do certian things on the whim of the emotions. I know when I was taking gout medication it caused me to pick up the phone and call certain people like my mom or whosoever came to my mind. And many still think that what we do causes us to be cleansed from sin or sanctified from it. However, a Christian does not do such things. What is to be done is what the law says. But we are sinful and we sin continuously after we are born again so that we cannot glory in ourselves but rather in Him who alone saved us by the blood of Christ Jesus having imputed our sins to Him and we receiving his righteousness by imputation and as a result believing in Him alone for our justification and sanctification; we do good works as a result of our position in Christ. Those who have accepted the promises of Christ for themselves by the Spirits work within do read and determine what the good is by what the Bible says. The Bible is made of two principles law and gospel by which are marked separately. The law tells us what we are to do to live and condemns all for lack of perfection and the gospel declares what God did on the behalf of His people people in Christ. What we ought to do is read and study the Bible to determine our actions not science, or actions of others.