1)Accept Your Needs-Recongnize what makes you stressed.Once You know this,you can avoid it/them.
2)Manage Your Time-Prioritizing -Prioritizing your activities can help you use your time well. Making a day-to-day schedule helps ensure you don't feel overwhelmed by everyday tasks and deadlines.
3)Practice Relexation-Taking A break and doing things you enjoy can definitly help reduce stress.Things such as listening to music and watching movies are examples of things people do to relax.
4)Eat Well-Eating unprocessed foods, like whole grains, vegetables, and fresh fruit is the foundation for a healthy body and mind. Eating well can also help stabilize your mood.
5)Get Enough Sleep-Symptoms of some mental health conditions, like mania in bipolar disorder, can be triggered by getting too little sleep.
6)Talk to someone-Whether to friends, family, a counselor or a support group, airing out and talking can help.
7)Build in Regular Exercise-Moving your body on a regular basis balances the nervous system and increases blood circulation, helping to flush out stress hormones.
8)Eliminate Your Triggers
Figure out what are the biggest causes of stress in your life. Is it your job, your commute, your schoolwork? If you’re able to identify what they are, see if you’re able to eliminate them from your life, or at least reduce them.
9).Talk About Your Problems
If things are bothering you, talking about them can help lower your stress. You can talk to family members, friends, a trusted clergyman, your doctor, or a therapist.
10)Relax Your Muscles
When you’re stressed, your muscles get tense. You can help loosen them up on your own and refresh your body by:

Stretching
Enjoying a massage
Taking a hot bath or shower
Getting a good night’s sleep

Let yourself feel the pain and all the other emotions
Do Not Let Others tell you how to feel. If you feel like crying then cry because its not good to hold in emotions.

Get Support.
Talk about memories you had with the person that has passed. Talk to others and let them know how you feel

Take care of Yourself
Eat well and exercise.Physical Activity is a good way to release tension 

Avoid the Use of Drugs
This can harm your body as well as dull your emotions. It’s also likely to slow your recovery and may cause new problems.

Forgive yourself for all the things you did or didn’t say or do.
Compassion and forgiveness for yourself and others is important in healing

Negative thoughts or feelings about themselves.

Changes in their bodies.

Problems with friends and/or peers at school.

Unsafe living environment/neighborhood.

Separation or divorce of parents.

Chronic illness or severe problems in the family.

World Events-(ex.School Shootings,acts of terrorism,natural disasters)