Will be met with criticism, skepticism and depending on how much of a change it might introduce also with hostility.
The trick is to keep showing up.
To not pack your bags and just leave when you hit a roadblock.
Or a few dozen roadblocks.
The trick is to show up longer and more often than everybody else.
That's the only way to be taken seriously.
To be able to do something important.
To wash away criticism, skepticism and sometimes even hostility.
This works even, no especially when you're a complete nobody, with no contacts, no network, no credentials and nothing else to show other than yourself.
So how do you know when to quit and when to stick?
If it's really important, if it's the one thing you were sent here to do then you basically never quit.
You just adapt and try something else.
Until it works.
And if it's not really important, if it's not the one thing you were sent here to do, you'll give up sooner or later anyway.
So better to start working on that one thing right away.
And never ever stop again.
But don't be a fool and go all in right away.
Reduce and spread your risk as much as you can.
Because everything important takes time.
Change takes time.
A lot of time.
Probably a lot more time than you have money in the bank...
[Related: I stopped giving a shit a long time ago]