Targets of bullying usually have these qualities:

• popularity (this stimulates jealousy in the less-than-popular bully)
• competence (this stimulates envy in the less-than-competent bully)
• honesty and integrity
• you're trustworthy, trusting, conscientious, loyal and dependable
• a well-developed integrity which you're unwilling to compromise
• you're always willing to go that extra mile and expect others to do the same
• successful, tenacious, determined, courageous, having fortitude
• a sense of humour, including displays of quick-wittedness
• imaginative, creative, innovative, idealistic, optimistic, always working for improvement and betterment of self, family, the employer,
• ability to master new skills
• ability to think long term and to see the bigger picture
• sensitivity (this is a constellation of values to be cherished including
  empathy, concern for others, respect, tolerance etc)
• slow to anger
• helpful, always willing to share knowledge and experience
• giving and selfless
• difficulty saying no
• diligent, industrious
• tolerant
• strong sense of honour
• irrepressible, wanting to tackle and correct injustice wherever you see it
• an inability to value oneself whilst attributing greater importance and validity to other people's opinions of oneself (eg through tests, exams, appraisals, manager's feedback, etc)
• low propensity to violence (ie you prefer to resolve conflict through dialogue rather than through violence or legal action)
• a strong forgiving streak (which the bully exploits and manipulates to
  dissuade you from taking grievance and legal action)
• a desire to always think well of others
• being incorruptible, having high moral standards which you are unwilling to compromise
• being unwilling to lower standards a strong well-defined set of values which you are unwilling to compromise or abandon
• high expectations of those in authority and a dislike of incompetent people in positions of power who abuse power
• a tendency to self-deprecation, indecisiveness, deference and approval seeking
• low assertiveness
• a need to feel valued
• quick to apologise when accused, even if not guilty (this is a useful technique for defusing an aggressive customer or potential road rage incident)
• perfectionism
• higher-than-average levels of dependency, naivety and guilt
• a strong sense of fair play and a desire to always be reasonable
• high coping skills under stress, especially when the injury to health becomes apparent
• a tendency to internalise anger rather than express it