Launch custom workflow on page/asset publish

Hi,

I am using AEM 6.5 version.

I have created a custom workflow model.

Currently I am able to launch it manually for single page.

But my requirement is to launch a workflow automatically as soon as activate button is clicked on page or asset from author.

I don't want to trigger workflow separately.

Is there any default workflow which AEM provides.

Or please suggest a process for automating workflow triggering.

I don't want to do it from workflow launcher on replication date modified node change.

Thanks in advance.