One type of suicidal impulse is simply the result of an inability to keep going. In a sense- the triumph of laziness, the desire for rest.The part of you that wants to die is the one that wants to rest. The one that doesn’t want to have to bother. The lazy part. Laziness is therefore the key negative aspect at work here. ‘Can’t be bothered’ leads to the desire to sleep and the desire to die.