Observe the breath carefully - in/out - rising/falling - long/short breaths
train in the breath this way, until mindfulness is achieved. Practice:
mindfulness of the body (kaya);
mindfulness of feelings or sensations (vedanā);
mindfulness of mind or consciousness (citta); and.
mindfulness of dhammās.
As a result one should develop clarity of mind, alertness, clear thinking as a result. As the saying goes: "Cooler heads prevail" - we should develop a cooler head.
If you can't feel yourself breathing via body, sensations, mind, dhammas, then we come back to the mindfulness, regulating mindfulness to follow the breath in these four bases. Just feeling the in/out breath with body alone should be sufficient to feel the cooling effect. This is not insignificant, stay with it.
Study the suttas - Ānāpānasati - Satipaṭṭhāna
Check your practice against these texts - it should work.
Download Insight Timer for your smart phone
Load the Presets with 15 minute, 20 minute, etc. sessions
Use the unguided meditation method
track your daily, weekly, monthly progress, aiming for stability and getting established.
Or get an actual timer and a meditation bell. It's good to have a zafu. All the props do actually help. Go to sangha meetings. Over time, increase your daily sessions, the more you give, the more you get.