The incidence that happening to us is accidental or .......?
From my concept it is not atall accidental, because whatever happening to us at any situation is not an accident, a perfect hand(Omnipotent GOD's) is behind there. What ever is happening to me(us) is good for us. For that time it may be bad(according to you), but if you are a GOD fearing person you can believe that GOD hand is planning something, that will turn fruitful to your life afterwards. Obviosly you need to do your duties/responsibilities first before having this faith.
In simple words, If you are in unexpected traffic jam no need to be panic, that may be good for you, to prevent you from some serious hazards.
If we take the things happening in our life in this manner then there wil be a great change in our attitude to the situations, will lead to an ultimate perfection.
I thing ONLY trust in GOD will give ability to do these, try to understand and analyses the situations.