How do you respecialize your abilities?
First re-specialization costs 1 gold, while subsequent ones cost 345 gold. This will allow you to buy The Tactician's Renewal amulet. Once you equip it you get back all your ability points
You can respect near the Blacksmith in Haven:
Once you get to Skyhold you can buy the same item in the Undercroft near the same looking flag:
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