Why do bad things keep happening to me

1. Temperance - balance/moderation.
2. 7 Swords - setbacks.
3. 4 of Cups - disillusionment.

Reading these cards together they seem to suggest (and sorry if it sounds harsh) that you find it difficult, or hard to accept, that 'bad things' should happen to you.
Temperance is about blending, finding the right balance between two things (good and bad), accepting that both things are needed to become life experience.
7 of Swords can indicate avoidance of harsh truths, not wanting to face up to responsibility (yep, adulting sucks at times) but could some of these events have been avoided by better preparation.
4 of Cups could suggest that maybe one event from this month has set the tone on how you have reacted to the rest of the situations, you say yourself that you may be failing to see the good that's happened. It may be that you need to try and reflect on the positives that may have happened, but also understanding that life doesn't only put good things in our path. Challenging situations are part of life.