Leading a life of purpose and intention comes as a result of setting healthy boundaries. When seeking advice, take only what you need and leave the rest.
Nothing creates a state of being emotionally drained more than being a people pleasure. Learning to say "no" and creating healthy boundaries will equate to unsurmountable heights. If you catch yourself saying "I'm so tired", or lacking the energy and motivation to pursuing your own passion, it's time to re-evaluate. It's time to step back and analyze what deserves your energy and attention and what doesn't.
Here's what to keep in mind...
Use I statements and NOT you statement
I don't appreciate you yelling at me, if it continues... I will leave the room and end this conversation.
instead of " You can't yell at me."
I'm going to need sometime to think about this, if you need an answer right away, It'll have to be no.
Give a reason for saying no
I understand that you are in a bind with this event, but I really need to focus on --
Offer a specific alternative to something you want to do
I won't be able to make it to your dinner party tonight, because ---. May be we can do a yoga class together next Tuesday instead?