The first thing to do to retain whatever experience or benefit the Lord given us is to continuously cherish such benefits or experiences as a mother does her sucking child (cp Is.  49:15; 1Tim. 1:12-17). 

We must so cherish such things that we become jealous of them, that is, we become possessively watchful, vigilant and protective of them (cp Col. 2:18; Rev. 3:11). 

Whether it is salvation, sanctification, baptism of the Holy Spirit,  healing of body/mind, revival/renewal of spirit, material blessings or promises for same, this rule must first apply.