Don't feel bad. You had a moment of weakness, it happens to everyone.

Developing hobbies and staying distracted will probably help you move on. You have to let yourself grieve over the relationship but you also need to acknowledge your ability to move on and forgive yourself for moments of "weakness". Cry, but don't make it a habit. Its good to get emotions out. Now that you're not in denial, you will have time to process the emotions of losing someone. You have gone 6 months without living a life with her which shows strength because it shows you CAN move forward and that you're capable.