Can I help it [=is it my fault] if no one listens to my advice?谁都不听，我又有什么办法？

There will be no more layoffs. At least not if I can help it. [=if I can prevent it; if it is up to me]今后不会再有裁员。至少是如果我能阻止的话，就不会再有裁员。