To have lord ganesha with you means all success in everything.
Lord Ganesha is worshipped for riddhi siddhi Success in all undertakings.
He is worshipped before any task, venture, work, new home, business, car, vehicles, marriage, ceremony, any rituals, festival is started. He is also the God of lots of good luck, education, knowledge, wisdom, power, success, fame literature and fine arts.

HOME

Lord Ganesha Symbolism:

Big head: think big

Small eyes: concentrate

Rope in right hand: pull you nearer to higher, right goal

One tusk: retain good and throw away bad

Trunk: high efficiency and adaptability

Modak: sweets rewards of spiritual work sadhana

Mouse at feet: desire under control

Prasad: fruits of good hard work and efforts

Large stomach:  peacefully digest all good and bad in life

Blessing hand: all time blessed and protected

Small mouth: talk less but effective

Axe: cut of all blocks and complex and attachment

Large ears: listen more

“Om gang ganeshaye Namaha”