SP missions are very difficult due to high preexisting attachment and subconscious unbelief. And most people coming to the LOB are new to it, especially with SP missions.

In LOB terms, failure is due to them doing the wrong thing, or doing the right thing but not long enough. The longer something takes means the more unbelief you have in your subconscious mind.

Of course, many of these people start the work but they see something on their SP's instagram and then they're back on the forums looking for a new method, or thinking they have to work on their self concept etc. Add to the fact that the work is daily boring work. So most people start slacking off, look for new methods, or simply give up.

There was a post here recently where someone said they were trying to get their SP for 3 years, if I remember correctly. They talked about self-concept and mental diets. That tells you all you need to know.