How to help those with suicidal ideation

Back in April of 2018 I shared an article about my suicidal ideation. I was impressed with how many people appreciated it and what a response it got. One of my friends asked me the question below and I thought it could be helpful to share a response with a wider audience.
 
I’d be curious to hear more about how you overcome your darkest thoughts and any suggestions you might have for the family and friends of those who feel depressed/suicidal.
I realize it can feel scary and leave one feeling helpless to watch a loved one go through suicidal experiences. The best thing I can do is remind myself that my mind is not telling me the truth. Additionally, whatever I'm feeling is something I've overcome and dealt with before. I find it helpful to deal with facts and truths that are unshakeable. I'm usually looking for stability and security when I'm unsure of myself and suicidal. So, if someone can give me something that is surefire, that's a safe feeling to me. Of course, all of this is built upon years of therapy and medication, so experiences you have with loved ones may vary.
 
If nothing else, you can encourage the person to take some self-care and see their therapist if they have one. And of course, just listening is helpful, too. It can be really difficult to get through dark times (both as someone suffering from suicidal ideation and as someone trying to help that individual) but I, as well as many others, are proof that it can be done.