Set realistic goals. Anyone who has ever set an unrealistic keto life goal will tell you that not meeting your own expectations is the fastest way to fail at keto life. You should plan to lose no more than 1-2 pounds per week. In general, people who set realistic goals will exceed it during at least the first few weeks. Exceeding your keto life goals will give you something to get excited about, and keep the keto life process positive.
In this match-up between these two goals, it may seem that fat loss is the preferred victor over keto life. It may be the case, but do keep in mind that keto life is not an option you shouldn't choose to take. Just be wary, however, to only have a goal of losing fat and not any other type of weight, and this match-up might end with a draw.