There are givers and takers in this world. We meet them every day, they infiltrate our lives.
Think about the old friend that only contacts you when they need something, taking and depleting and rarely giving back. They make promises of giving but never do. This taking can manifest itself in many ways such as offloading of worries, using your time, which you can never get back. Supporting them in their hour of need and never being there for you in yours. They give you no recognition of the support you have given them, they just expect you to do as they want when they want. Some of these people will be kinder to strangers than they are with you.
Sooner or later the takers will empty the relationship bank account, no more withdrawals as the account is empty, the relationship dies.
In order to keep everything under control, you need to develop yourself as a person in terms of work, relationships and personal growth in general. You can read more about this by going to the resource mental mastery lab
