Many things can cause stress, such as pressure, facing significant life changes, worrying about something, or not having control over a situation. Stressful life events, even seemingly insignificant ones, can have a direct impact on mental health. Factors influencing your stress include your comfort level in different situations, past experiences, available resources, and support from others. Certain events may cause stress at times, but not every time. For example, going shopping for food with enough time and money may not be stressful, but it might be if you have a tight budget or many other things to do.