unless the design is like the attached, - when tasks are within the container.
The only way in such case is to fail the package right?

I actually did it via
   Dts.TaskResult = (int)ScriptResults.Failure;
in a script task, because we wanted the pkg not just send email and stop execution but report failure as well.

i am seeing something like this
https://www.anexinet.com/blog/having-an-ssis-component-wait-until-a-condition-is-met-or-a-time-period-passes/
but it seems so cumbersome/weird/big workaround.

Isn't there just a way to say EXIT? or END ? like it is possible...