Recognising the signs

Before you can manage mood swings, you need to know what you’re actually dealing with. This section covers how to recognise them, and how to tell the difference between a rough day and something that needs a bit more attention.

Normal fluctuation versus significant mood swings

Everyone’s mood shifts. Feeling happy about good news, gutted after a setback, or irritable when you’re tired, that’s completely normal, because the human brain is built to respond to what is happening around it. The real question is how extreme those shifts are, how long they last and how much they disrupt your daily life.

Normal mood fluctuation	Significant mood swings
Lasts hours to a couple of days	Persists for weeks or longer
Usually has a clear trigger	Can occur without warning or obvious cause
Mild to moderate intensity	Extreme highs or lows, hard to control
Returns to baseline naturally	Significantly disrupts daily life
Doesn’t damage relationships	Creates real tension with friends, family and work

Common signs to notice

⚡

Abrupt emotional shifts

Moving rapidly from elation to sadness, or from calm to rage, without a reason that fits the size of the feeling.

🔋

Elevated energy

During high phases, restlessness, an inability to sit still, feeling unstoppably productive and then crashing.

😤

Intense irritability

Small things, a slow Wi-Fi connection or someone chewing loudly, setting off a rage that is out of all proportion.

😴

Disrupted sleep

Either barely needing sleep during highs, or struggling to get out of bed at all during low phases.

🌀

Racing thoughts

Ideas flooding in faster than you can process them, and finding it hard to focus on any one of them.

😶

Loss of pleasure

Things you normally enjoy, music, sport, seeing friends, feel flat or pointless during low periods.

🫤

Guilt and worthlessness

Negative self-talk that escalates, feeling like a burden or that nothing you do really matters.

🍽️

Appetite changes

Noticeably eating far more or far less than usual across different mood phases.

Real-life scenario

Jess, 19, notices she’ll have days where she messages everyone, stays up until 2am working on creative projects and feels invincible, then spends the next three days barely able to leave her room. She’s been putting it down to just being tired, though her flatmate has started asking if she’s okay.

Try this today

For one week, rate your mood out of 10 each morning and each evening. You don’t need an app, a notes page or a notebook works perfectly well, and patterns will usually start to show within a few days.