I have no choice but to think something's going to happen.
(Something leads me to believe) something's going to happen.
It could be a positive expectation or a negative expectation in this context. We cannot tell from this excerpt alone what "this" refers to in "this can be the easy part."
The speaker's use of "got" suggests that he or she may be reluctant to think it, and therefore it is a prediction that something bad will happen.
However, it could also mean something like a concept of balance or fairness forces him or her to conclude that they were owed this recent peace after previous trials.