What are some internal and external conflicts that Katniss has to deal with in The Hunger Games?

Well, quite obviously, the biggest external conflict that
Katniss faces is the grim battle for survival that she must endure in the arena of the
Hunger Games. It is this conflict that dominates a significant section of the novel, as
she must use all of her skill and ingenuity to defeat and kill the other contenders
whilst they are trying to do exactly the same thing to her. However, another important
external conflict that exists in the novel is the way that Katniss, through her attitude
of defiance, comes into conflict with the Capitol. Note what Haymitch tells Katniss in
Chapter 26:

readability="6">

Listen up. You're in trouble. Word is the
Capitol's furious about you showing them up in the arena. The one thing they can't stand
is being laughed at and they're the joke of
Panem.

Thus we can see that
even after she has won the games, Katniss still has to struggle for her life. In
addition to these two examples of external conflict, one of the central internal
conflicts running through the entire novel is the way that Katniss is unsure about her
feelings for both Peeta and Gael. The situation is complicated by the way in which she
is forced to pretend to have romantic feelings for Peeta when she is not sure that she
has them in the first place.