be hard going

It's hard going.

私は大変です

It's hard going carrying heavy luggage.

私は重い荷物を持って大変です

It's hard going carrying heavy luggage on my own.

私は重い荷物を持って一人で大変です

It's hard going carrying heavy luggage on my own up the steep stairs.

私は重い荷物を持って一人で急な階段を上るため大変です

It's hard going carrying heavy luggage on my own up the steep stairs, out of breath again and again.

私は重い荷物を持って一人で急な階段を上るため何度も息が切れ大変です