Hook was on one of the Ospreys' heroes in a 20-5 win over the Warriors, scoring the second of two tries at the Liberty Stadium.
The Welsh international crossed for a 54th minute score to give the hosts some breathing space after a Fergus Thomson try had threatened to turn things in Glasgow's favour.
"It was a tough evening, to be honest," said Hook, who has been wearing the No12 shirt for the Ospreys in recent weeks having also impressed for club and country in a number of other positions.
"They were difficult opponents as they always are. We knew they would be hard to break down, which they were.
"I enjoyed the game. It was a real battle; it was hard and physical but that's what it's all about.
"We were able to just edge it in the first half, and I think that allowed us to try and play it a bit in the second half. We kept the points ticking over and in the end, I don't think the result was in any doubt."
The Ospreys now turn their attentions to the season's showpiece event, the Magners League Grand Final a week on Saturday.
Hook and co will take on Irish giants Leinster on the Dubliners' home turf and the Wales star admits he is delighted to have a chance of ending the season with a trophy after the Ospreys missed out in all three competitions last season.
"We're all chuffed that we'll be ending the season with a final and a chance of some silverware," added Hook, who has played 14 of the Ospreys' 19 Magners League games this season.
"There's a good mentality in the group at the moment, we are tight and together.
"We're in the final now and it's going to be a massive one-off event. We just have to approach it in the same way and make sure we enjoy the occasion.
"We had a good couple of weeks in Ireland last month, two great wins in Ulster and Munster, and a narrow defeat in Leinster. We need to take confidence from the way we played in those games now, as we realise we can perform against anyone."
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