Desire and control are the opponents of a person who wants to grow spiritually

[Cannon]

If by 'growing spiritually' you mean ascending to the next density, the Ra material disagrees with the idea that desire and control will block one's way. Instead, it is Ra's position that one polarizes their consciousness through polarizing events in one's life and, if you polarize far enough into either a selfless individual or an individual who is primarily concerned with themselves first and foremost, one will then graduate (and go into a society of like-minded individuals) during an event they refer to as Harvest. The negative path, also known as 'service-to-self', in which its members are primarily concerned with control over their own lives (and unfortunately, many ware concerned with control over other's lives) is not actually evil and, those within, though their lives are what would normally be described as egotistical, do in fact have the capacity for something similar to or in fact is entirely of what is normally considered 'spiritual'.