Self Pity is the most severe and highest form of Pride. In Self Pity you think only of yourself and set your own beliefs up as the most superior judge of what is right or wrong ... fair or unfair. Therefore believing your own words, you elevate your judgements above God's judgements. (You place your own word above Gods Word) When you do this you are not giving God His Glory (Credit Due) God states in The Bible "My Glory will I not give to another"... This places you squarely in the middle of the "Unforgivable Sin", PRIDE. "God hates a haughty spirit". While there is forgiveness for sin... there is no forgiveness for pride. The remedy for pride is to humble yourself before God. The moment you enter pride God withdraws His grace and the darkness you feel in your self pity is that withdrawal of God's Grace.
Self-pity is a feeling of sadness, sorrow, or self-indulgent sorrow about one's own sufferings, hardships, or circumstances. It often involves dwelling on one's problems and can lead to a self-defeating mindset.
Self-pity refers an excessive and self-indulgent dwelling on one's own misfortunes and troubles. It is a feeling of desolation that lowers one's self-worth.
http://en.wikipedia.org/wiki/Self-pity
The Cullens go to Denali to live with other vegatarian vampires. Edward goes to Rome because he wants to "be alone." Translate: Wallow in his selfpity...