感 (-feeling/sense) is a productive suffix for subjective states:
幸福感 'happiness',
安全感 ānquángǎn 'sense of security',
成就感 chéngjiùgǎn 'sense of achievement',
获得感 huòdégǎn 'sense of gain' — the latter three plus
幸福感 form the policy quartet of citizen well-being indicators.