Just knowing someone who has committed suicide increases your risks. Someone in your immediate community can also increase your risks. Both can lead to clusters.
Rehearsing the act of suicide, going through the motions even mentally, will increase your chances immensely so that when something later happens to trigger you you can go into automatic mode without thinking and follow through what you have practiced. The risks especially increases then with most who do commit suicide will do so within 15 minutes of such an episode. After that the chances decrease to their previous levels.
Obviously it takes a lot to override our prime directive. Definitely not the path of least resistance. We were meant to experience growth while we live so that is the true path of least resistance.