Many people strive to help others even at the expense of their personal lives.
This zeal is commendable, but first we need to think about whether the person really needs help that much.
To prevent people from literally taking advantage of you, you need to be able to say no and set personal boundaries.

Here are three ways to refuse someone without offending them and to maintain the relationship.
Understand what you are willing to give up
Once you understand what is truly important to you, it will be easier for you to say no to a request.
First of all, decide for yourself what is a priority for you at this time.
Once you begin to realize the situation you are in, it will be easy for you to refuse the request.
Explanation of the reason
When you refuse someone, tell them the reason. This way, the person will understand you and won't be offended.
Don't be afraid to speak openly about your plans or thoughts.
Just tell the other person why you won't be able to help at this time.
Remain steadfast
Some people don't take no for an answer and continue to persuade.
Don't give in and explain the reason for the refusal again. At the same time, pay attention to what is really important to you.
It was previously reported why people tend to start relationships with partners similar to themselves.