I have consistent insomnia and a bad diet, i think i'm stressed. how do i handle stress?

Counseling.: Assuming there's nothing medical going on, for consideration of which you may want to visit a medical doctor, then a visit with a psychologist/therapist/counselor would be wise. You may need help with elucidating the cause of this anxiety and developing coping mechanisms.

Difficulty falling: asleep is often associated w/anxiety while waking up early and not returning to sleep is associated w/depression. Periodic waking is associated w/overall light sleep. Please see you doc who may order a sleep study. A psychologist can help w/stress management. Peace and good health. Natural treatment includes melatonin supplement but w/professional guidance. Stop all stimulants after noon.