It is usually held that humans have a need for meaning. This need may be satisfied by finding an accessible source of meaning. Religious faith can be a source of meaning and many studies demonstrate that it is associated with self-reported meaning in life. Another important source of meaning is due to one's social relationships. Lacking or losing a source of meaning, on the other hand, often leads to an existential crisis. In some cases, this change is clearly linked to a specific source of meaning that becomes inaccessible. For example, a religious person confronted with the vast extent of death and suffering may find their faith in a benevolent, omnipotent God shattered and thereby lose the ability to find meaning in life. For others, a concrete threat of imminent death, for example, due to the disruption of the social order, can have a similar effect. If the individual is unable to assimilate, reinterpret, or ignore this type of threatening information, the loss of their primary source of meaning may force them to reevaluate their system of meaning in life from the ground up. In this case, the person is entering an existential crisis, which can bring with it the need to question what other sources of meaning are accessible to them or whether there is meaning at all. Many different sources of meaning are discussed in the academic literature. Discovering such a source for oneself is often key to resolving an existential crisis. The sources discussed in the literature can be divided into altruism, dedication to a cause, creativity, hedonism, self-actualization, and finding the right attitude. Altruism refers to the practice or attitude based on the desire to benefit others. Altruists aim to make the world a better place than they found it. This can happen in various ways. On a small scale, one may try to be more kind to the people in one's immediate social environment. It can include the effort to become aware of their problems and try to help them, directly or indirectly. But the altruistic attitude may also express itself in a less personal form towards strangers, for example, by donating money to charities. Effective altruism is an example of a contemporary movement promoting altruism and providing concrete advice on how to live altruistically. It has been argued that altruism can be a strong source of meaning in one's life. This is also reflected