You can no longer go wherever you want or do whatever you want. You must now make any plans or life decisions based on the stalker's actions. Your life is no longer yours. The stalking may go on for months, even years. You may eventually be assaulted, or even the victim of a murder or suicide.
Psychological terrorism is the weapon stalkers use.
Stalking is not a crime of love or desire, but an attempt at domination. Stalkers keep someone in line by frightening them, similar to the way a jackal tracks and kills its prey, human stalkers wage a campaign of terror against their victims, and often the hunt ends only when the stalker moves on to another victim, or kills them. Few stalkers can see how their actions are hurting others. They display other sociopathic thinking in that they cannot learn from experience, and they don't believe society's rules apply to them. Most stalkers don't think they're really threatening, intimidating, or even stalking someone else.