Odoo : how to add a field before address field

In odoo, it is often a requirement to add a custom field before the address field in the contact form. This is a bit tricky since the xml template is super hard to figure out with divs. Here the below snippet will insert a custom field before address field

<xpath expr="//div[@class='oe_title mb24']" position="after">
<group>
<field name ="contact_reference"/>
</group>
</xpath>