We meet a lot of people in our life some are very nice and supportive, they give a purpose to your life by supporting/encouraging you while, there are some that hold you back and always discourage you. For the first one just hold them tight in your life and for toxic people just ignore them and their toxic traits if you want to live a happy and successful life. Toxic people only make you feel bad after interacting with them. They are always so manipulative and self-centred. However when you look at things from the point of view of psychology the term gets even more complicated. If you face difficulty in dealing with someone in your life, instead of simply labeling them as toxic, it is helpful to start by pointing out the abnormal/problematic behaviours. 

How to spot a toxic person ?

You always get confused by their behavior sometimes they show so much love to you and are very nice but sometimes they are so irritable, jealous of you.

You always feel like they are forcing you to do something you don't want to do. They are always very manipulative.

They always create drama even on small issues, they are never happy with what you do for them or the efforts you put in.  

They always talk behind your back and always try to discourage you in everything you do or always get you down.

They never apologize to you for what they did, even when you deserve one. They always get angry on you even on smaller issues.

You never feel to share anything with them or we can say that you are not completely comfortable with them.

How to deal with such people ?

The first step in dealing with such people is to recognize them. I have already discussed the toxic traits of these kind of people.

If you can, then always go on without them or just simply delete their existence from your life. When you remove such poisonous creatures from life then your environment becomes much easier to breathe. A healthy relationship should always be reciprocal, if you are doing something for someone then the other one should do the same for you. It should not be like that you are always giving and the other one is always taking.

If you are pretty much closer to a toxic person and you know it but can't leave them then simply go for the second opinion always.

Stop tolerating their toxic behaviour, tell them their flaws and force them to fix their behaviour