"I can't be bothered - why am i putting myself through this?"
...cause you suck it up, you do it for love of paddling, for respect for your team and to kick the other boats' collective butts!
But seriously, one of the biggest challenges for newbies is gelling as a team; nothing worse than to engage in a new sport and trying to fit in with a bunch of strangers. This takes time. The best approach is to try and connect to a smaller portion of the team, such as the leads, the power core or even your bench mate. Feed off of the energy from the group and use it to inspire you to "suck it up" and put it all out there.
Just as an aside, I found that around the two thirds mark in a 500 M race, I catch a second wind... if that's any consolation.
Remember, thereās an end to every race and the harder you paddle, the sooner you get there.
Good luck and enjoy.