Agreeable people can suffer from too much pleasing of others, and too little of what brings them joy.
If we lack self-esteem, we may not feel able to influence others. However, starting with small situations, it is possible to build our confidence.
To be authentic, we may need to expose ourselves to rejection and unwelcome attention.
If we need to be right all the time, then we may get our own way. But, in the process, we may miss the chance to help others and make friends.
Even if gentle, we need to stand up for ourselves to be wise.
Boundaries can be useful. But they can also be badly misused, even by therapists.