How do you know when it's gotten to the time where you need to reach out to people?

It is never a bad time to reach out to other people! Even if what you are going through doesn't seem like "that big of a deal," or it seems unbearable, it is never a bad time to have the help and support of another person. Gaining a new perspective, advice, or even just a listening ear can help with the smallest or biggest of problems.

There isn't a specific time, or growth point. For every person it's different. When they are ready to reach out, they will. The best thing to do until then is be there for them and let them know they are supported.

When you are feeling heavily suicidal or when you want to harm others. Preferably before it gets to this point because often it is too deep and too difficult to pull oneself out

In all fairness, there's never a wrong time to reach out for help. As soon as you start thinking "I think I should talk to someone" or "I think I need help" or anything along those lines, it's a good idea to get help. It not only keeps you grounded, but also helps you get a new perspective which can help you improve. None of what you feel is insignificant, so please do reach out. A problem shared is a problem halved.

Usually it involves me getting extremely overwhelmed where i'm unable to work through problems myself

It is never too soon to reach out for help. There is no weakness in needing support. We are social creatures and we learn and heal in relationship. Why make it any harder on yourself. Find someone who is an expert in your area of need and see if they are available to offer their support. it takes courage to ask for help. be courageous.

Everytime you feel something is wrong with you. If you are asking this question, maybe is time to reach out for people

By the time you ask yourself whether or not you should reach out to someone, you probably already should.

Constant feeling of down in the dumps. (Daily) Stressing out over small issues. Distancing yourself from people - friends or family etc. Emotions distracting you from learning. others include: self harm, suicidal thoughts, paranoia etc.

You just know it. There is nothing wrong it seeking help. It will help you overcome your problems and make you a better and happier person.