Just reading:
http://dailyreminders.org/ten-thoughts-to-ponder/
My favourite one so far is the second point: Not bearing grudges, makes you healthy. I think that is true.
As far as I see it, holding grudges is a black emotion. A black emotion needs to be rid of along with things like jealousy. It's all about achieving to be a better person with being aware of God in your surroundings.
And for the worriers: and chase away your worries by remembering the blessings that Allah has bestowed upon you.
For those who are too lazy (this is one of my black emotion/characteristics) to click on the link:
1. Remember that your Lord forgives those who as Him for forgiveness, and He accepts the repentance of those who repent, and He accepts those who come back to him.
2. Show mercy to the weak and you will be happy; give to the needy and you will be well; do not bear grudges and you will be healthy.
3. Be optimistic, for Allah is with you, and the angels are praying for forgiveness for you, and Paradise awaits you.
4. Wipe away your tears, think well of your Lord, and chase away your worries by remembering the blessings that Allah has bestowed upon you.
5. Do not think that this world is ever perfect for anyone. There is no one on the face of the earth who gets all that he wants or is free from all kinds of distress.
6. Be like a tall tree with high aims; if a stone is thrown at it, it simply lets its fruits drop.
7. Have you ever heard that grief brings back what has been lost, or that worry corrects mistakes? So why grieve and worry then?
8. Do not expect trials and calamities, rather expect peace, safety and good health, if Allah wills.
9. Extinguish the flames of hatred from your heart by forgiving everyone who has ever hurt you.
10. Ghusl, wudu, siwak and being organized are effective medicines for all kinds of distress and worry.
- Dr.A id al-Qarni-