"The hard work starts for us now. It's not just a case of being happy to be selected, it's now about working hard and aiming for starting jerseys. That's the goal now, I've become a better player since being part of the last Lions tour."
Hogg, who broke the 50-cap mark for Scotland during the RBS 6 Nations, added: 'The level of professionalism goes up another notch. The biggest thing I learned from the last tour is the need to be professional 24/7. I certainly wasn't that going into the last tour but I believe I am now.
"I think I've matured over the last few years and here's hoping I can get a bit of game time."
Although Gatland stated that the Warriors player had the 'X-factor' they needed to take on the All Blacks, Hogg's doubts over his inclusion were partly fuelled by the former Wales head coach talking about his defensive weakness.
"Yeah, I know he did talk about that," Hogg said. "You are never the complete rugby player, are you? Everyone has strengths and weaknesses. And defence is probably the weakest part of my game.
"But it's not one that I shy away from. I know that I need to get better and I've been working hard to get better. I will continue to do so. Everybody has an opinion.
"As soon as I heard Warren Gatland saying it, I was on the training pitch straight away. You just need to knuckle down and I'll try to be the best rugby player I can be."
While Hogg saw the news unfold along with his wife and young family, Seymour shared the moment with several Warriors team-mates.
The 28-year-old winger said: "It's an amazing feeling, a really proud moment for me and my family.
"I was at lunch with Richie Vernon when the news broke. I wasn't watching on my phone or anything. I was just relaxing and Ali Price and Finn (Russell) were in the corner of the coffee shop and they signalled to Richie, who somewhat exploded at the table.
"My phone started going off in parallel with Richie's excitement and Ryan Wilson walked in out the blue and started going mental in the coffee shop.
"I was sitting there feeling half-nauseous, sick, sweating and then Hoggy came and picked me up. It's been a bit of a whirlwind and he whisked me here. It's special."